1 ;;; nndoc.el --- single file access for Gnus
3 ;; Copyright (C) 1995-2015 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 3 of the License, or
14 ;; (at your option) any later version.
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. If not, see <http://www.gnu.org/licenses/>.
26 ;; For Outlook mail boxes format, see http://mbx2mbox.sourceforge.net/
36 (eval-when-compile (require 'cl))
40 (defvoo nndoc-article-type 'guess
42 One of `mbox', `babyl', `digest', `news', `rnews', `mmdf', `forward',
43 `rfc934', `rfc822-forward', `mime-parts', `standard-digest',
44 `slack-digest', `clari-briefs', `nsmail', `outlook', `oe-dbx',
45 `mailman', `exim-bounce', or `guess'.")
47 (defvoo nndoc-post-type 'mail
48 "*Whether the nndoc group is `mail' or `post'.")
50 (defvoo nndoc-open-document-hook 'nnheader-ms-strip-cr
51 "Hook run after opening a document.
52 The default function removes all trailing carriage returns
55 (defvar nndoc-type-alist
57 (article-begin . "^\^A\^A\^A\^A\n")
58 (body-end . "^\^A\^A\^A\^A\n"))
60 (file-begin . "^\005")
61 (article-begin . "^[\005\007]\n")
65 (head-begin . "^ ?\n")
69 (subtype digest guess))
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 (generate-head-function . nndoc-generate-mime-parts-head)
87 (article-transform-function . nndoc-transform-mime-parts))
89 (article-begin . "^------ This is a copy of the message, including all the headers. ------\n\n")
90 (body-end-function . nndoc-exim-bounce-body-end-function))
92 (article-begin . "^--.*\n+")
94 (prepare-body-function . nndoc-unquote-dashes))
96 (article-begin . "^--__--__--\n\nMessage:")
97 (body-end . "^--__--__--$")
98 (prepare-body-function . nndoc-unquote-dashes))
100 (article-begin . "^ \\*")
101 (body-end . "^\t------*[ \t]^*\n^ \\*")
104 (generate-head-function . nndoc-generate-clari-briefs-head)
105 (article-transform-function . nndoc-transform-clari-briefs))
108 (first-article . ,(concat "^" (make-string 70 ?-) "\n *\n+"))
109 (article-begin . ,(concat "^\n" (make-string 30 ?-) "\n *\n+"))
110 (prepare-body-function . nndoc-unquote-dashes)
111 (body-end-function . nndoc-digest-body-end)
113 (body-begin . "^ *\n")
114 (file-end . "^End of .*digest.*[0-9].*\n\\*\\*\\|^End of.*Digest *$")
115 (subtype digest guess))
117 (article-begin . "^------------------------------*[\n \t]+")
119 (body-end-function . nndoc-digest-body-end)
120 (body-begin . "^ ?$")
121 (file-end . "^End of")
122 (prepare-body-function . nndoc-unquote-dashes)
123 (subtype digest guess))
125 (pre-dissection-function . nndoc-decode-content-transfer-encoding)
126 (article-begin . "^== [0-9]+ of [0-9]+ ==$")
127 (head-begin . "^Date:")
129 (body-end-function . nndoc-digest-body-end)
131 (file-end . "^==============================================================================$")
132 (prepare-body-function . nndoc-unquote-dashes)
133 (subtype digest guess))
135 (article-begin . "^\\\\\\\\\n")
136 (head-begin . "^\\(Paper.*:\\|arXiv:\\)")
137 (head-end . "\\(^\\\\\\\\.*\n\\|-----------------\\)")
139 (body-end . "\\(-------------------------------------------------\\|%-%-%-%-%-%-%-%-%-%-%-%-%-%-\\|%%--%%--%%--%%--%%--%%--%%--%%--\\|%%%---%%%---%%%---%%%---\\)")
140 (file-end . "\\(^Title: Recent Seminal\\|%%%---%%%---%%%---%%%---\\)")
141 (generate-head-function . nndoc-generate-lanl-gov-head)
142 (article-transform-function . nndoc-transform-lanl-gov-announce)
143 (subtype preprints guess))
145 (file-begin . "\n- Log ---.*")
146 (article-begin . "^commit ")
147 (head-begin . "^Author: ")
149 (file-end . "\n-----------------------------------------------------------------------")
150 (article-transform-function . nndoc-transform-git-article)
151 (header-transform-function . nndoc-transform-git-headers))
153 (article-begin . "^\n+")
154 (body-end-function . nndoc-rfc822-forward-body-end-function)
155 (generate-head-function . nndoc-rfc822-forward-generate-head)
156 (generate-article-function . nndoc-rfc822-forward-generate-article))
158 (article-begin-function . nndoc-outlook-article-begin)
160 (oe-dbx ;; Outlook Express DBX format
161 (dissection-function . nndoc-oe-dbx-dissection)
162 (generate-head-function . nndoc-oe-dbx-generate-head)
163 (generate-article-function . nndoc-oe-dbx-generate-article))
165 (article-begin . "^-+ \\(Start of \\)?forwarded message.*\n+")
166 (body-end . "^-+ End \\(of \\)?forwarded message.*$")
167 (prepare-body-function . nndoc-unquote-dashes))
168 (mail-in-mail ;; Wild guess on mailer daemon's messages or others
169 (article-begin-function . nndoc-mail-in-mail-article-begin))
180 (defvar nndoc-binary-file-names ".[Dd][Bb][Xx]$"
181 "Regexp for binary nndoc file names.")
184 (defvoo nndoc-file-begin nil)
185 (defvoo nndoc-first-article nil)
186 (defvoo nndoc-article-begin nil)
187 (defvoo nndoc-head-begin nil)
188 (defvoo nndoc-head-end nil)
189 (defvoo nndoc-file-end nil)
190 (defvoo nndoc-body-begin nil)
191 (defvoo nndoc-body-end-function nil)
192 (defvoo nndoc-body-begin-function nil)
193 (defvoo nndoc-head-begin-function nil)
194 (defvoo nndoc-body-end nil)
195 ;; nndoc-dissection-alist is a list of sublists. Each sublist holds the
196 ;; following items. ARTICLE acts as the association key and is an ordinal
197 ;; starting at 1. HEAD-BEGIN [0], HEAD-END [1], BODY-BEGIN [2] and BODY-END
198 ;; [3] are positions in the `nndoc' buffer. LINE-COUNT [4] is a count of
199 ;; lines in the body. For MIME dissections only, ARTICLE-INSERT [5] and
200 ;; SUMMARY-INSERT [6] give headers to insert for full article or summary line
201 ;; generation, respectively. Other headers usually follow directly from the
202 ;; buffer. Value nil means no insert.
203 (defvoo nndoc-dissection-alist nil)
204 (defvoo nndoc-prepare-body-function nil)
205 (defvoo nndoc-generate-head-function nil)
206 (defvoo nndoc-article-transform-function nil)
207 (defvoo nndoc-header-transform-function nil)
208 (defvoo nndoc-article-begin-function nil)
209 (defvoo nndoc-generate-article-function nil)
210 (defvoo nndoc-dissection-function nil)
211 (defvoo nndoc-pre-dissection-function nil)
213 (defvoo nndoc-status-string "")
214 (defvoo nndoc-group-alist nil)
215 (defvoo nndoc-current-buffer nil
216 "Current nndoc news buffer.")
217 (defvoo nndoc-address nil)
219 (defconst nndoc-version "nndoc 1.0"
224 ;;; Interface functions
226 (nnoo-define-basics nndoc)
228 (deffoo nndoc-retrieve-headers (articles &optional newsgroup server fetch-old)
229 (when (nndoc-possibly-change-buffer newsgroup server)
230 (with-current-buffer nntp-server-buffer
233 (if (stringp (car articles))
236 (when (setq entry (cdr (assq (setq article (pop articles))
237 nndoc-dissection-alist)))
238 (let ((start (point)))
239 (insert (format "221 %d Article retrieved.\n" article))
240 (if nndoc-generate-head-function
241 (funcall nndoc-generate-head-function article)
242 (insert-buffer-substring
243 nndoc-current-buffer (car entry) (nth 1 entry)))
244 (goto-char (point-max))
245 (unless (eq (char-after (1- (point))) ?\n)
247 (insert (format "Lines: %d\n" (nth 4 entry)))
249 (when nndoc-header-transform-function
252 (narrow-to-region start (point))
253 (funcall nndoc-header-transform-function entry)))))))
254 (nnheader-fold-continuation-lines)
257 (deffoo nndoc-request-article (article &optional newsgroup server buffer)
258 (nndoc-possibly-change-buffer newsgroup server)
260 (let ((buffer (or buffer nntp-server-buffer))
261 (entry (cdr (assq article nndoc-dissection-alist)))
267 ((stringp article) nil)
268 (nndoc-generate-article-function
269 (funcall nndoc-generate-article-function article))
271 (insert-buffer-substring
272 nndoc-current-buffer (car entry) (nth 1 entry))
275 (insert-buffer-substring
276 nndoc-current-buffer (nth 2 entry) (nth 3 entry))
278 (when nndoc-prepare-body-function
279 (funcall nndoc-prepare-body-function))
280 (when nndoc-article-transform-function
281 (funcall nndoc-article-transform-function article))
284 (deffoo nndoc-request-group (group &optional server dont-check info)
288 ((not (nndoc-possibly-change-buffer group server))
289 (nnheader-report 'nndoc "No such file or buffer: %s"
292 (nnheader-report 'nndoc "Selected group %s" group)
294 ((zerop (setq number (length nndoc-dissection-alist)))
295 (nndoc-close-group group)
296 (nnheader-report 'nndoc "No articles in group %s" group))
298 (nnheader-insert "211 %d %d %d %s\n" number 1 number group)))))
300 (deffoo nndoc-retrieve-groups (groups &optional server)
301 (dolist (group groups)
302 (nndoc-request-group group server))
305 (deffoo nndoc-request-type (group &optional article)
306 (cond ((not article) 'unknown)
307 (nndoc-post-type nndoc-post-type)
310 (deffoo nndoc-close-group (group &optional server)
311 (nndoc-possibly-change-buffer group server)
312 (and nndoc-current-buffer
313 (buffer-name nndoc-current-buffer)
314 (kill-buffer nndoc-current-buffer))
315 (setq nndoc-group-alist (delq (assoc group nndoc-group-alist)
317 (setq nndoc-current-buffer nil)
318 (nnoo-close-server 'nndoc server)
319 (setq nndoc-dissection-alist nil)
322 (deffoo nndoc-request-list (&optional server)
325 (deffoo nndoc-request-newgroups (date &optional server)
328 (deffoo nndoc-request-list-newsgroups (&optional server)
332 ;;; Internal functions.
334 (defun nndoc-possibly-change-buffer (group source)
337 ;; The current buffer is this group's buffer.
338 ((and nndoc-current-buffer
339 (buffer-name nndoc-current-buffer)
340 (eq nndoc-current-buffer
341 (setq buf (cdr (assoc group nndoc-group-alist))))))
342 ;; We change buffers by taking an old from the group alist.
343 ;; `source' is either a string (a file name) or a buffer object.
345 (setq nndoc-current-buffer buf))
346 ;; It's a totally new group.
347 ((or (and (bufferp nndoc-address)
348 (buffer-name nndoc-address))
349 (and (stringp nndoc-address)
350 (file-exists-p nndoc-address)
351 (not (file-directory-p nndoc-address))))
352 (push (cons group (setq nndoc-current-buffer
354 (concat " *nndoc " group "*"))))
356 (setq nndoc-dissection-alist nil)
357 (with-current-buffer nndoc-current-buffer
359 (if (and (stringp nndoc-address)
360 (string-match nndoc-binary-file-names nndoc-address))
361 (let ((coding-system-for-read 'binary))
362 (mm-insert-file-contents nndoc-address))
363 (if (stringp nndoc-address)
364 (nnheader-insert-file-contents nndoc-address)
365 (insert-buffer-substring nndoc-address))
366 (run-hooks 'nndoc-open-document-hook)))))
367 ;; Initialize the nndoc structures according to this new document.
368 (when (and nndoc-current-buffer
369 (not nndoc-dissection-alist))
370 (with-current-buffer nndoc-current-buffer
372 (if (eq nndoc-article-type 'mime-parts)
373 (nndoc-dissect-mime-parts)
374 (nndoc-dissect-buffer))))
375 (unless nndoc-current-buffer
376 (nndoc-close-server))
377 ;; Return whether we managed to select a file.
378 nndoc-current-buffer))
381 ;;; Deciding what document type we have
384 (defun nndoc-set-delims ()
385 "Set the nndoc delimiter variables according to the type of the document."
386 (let ((vars '(nndoc-file-begin
388 nndoc-article-begin-function
389 nndoc-head-begin nndoc-head-end
390 nndoc-file-end nndoc-article-begin
391 nndoc-body-begin nndoc-body-end-function nndoc-body-end
392 nndoc-prepare-body-function nndoc-article-transform-function
393 nndoc-header-transform-function
394 nndoc-generate-head-function nndoc-body-begin-function
395 nndoc-head-begin-function
396 nndoc-generate-article-function
397 nndoc-dissection-function
398 nndoc-pre-dissection-function)))
400 (set (pop vars) nil)))
402 ;; Guess away until we find the real file type.
403 (while (assq 'guess (setq defs (cdr (assq nndoc-article-type
405 (setq nndoc-article-type (nndoc-guess-type nndoc-article-type)))
406 ;; Set the nndoc variables.
408 (set (intern (format "nndoc-%s" (caar defs)))
411 (defun nndoc-guess-type (subtype)
412 (let ((alist nndoc-type-alist)
413 results result entry)
414 (while (and (not result)
415 (setq entry (pop alist)))
416 (when (memq subtype (or (cdr (assq 'subtype entry)) '(guess)))
417 (goto-char (point-min))
418 ;; Remove blank lines.
419 (while (eq (following-char) ?\n)
421 (when (numberp (setq result (funcall (intern
422 (format "nndoc-%s-type-p"
424 (push (cons result entry) results)
426 (unless (or result results)
427 (error "Document is not of any recognized type"))
430 (cadar (last (sort results 'car-less-than-car))))))
433 ;;; Built-in type predicates and functions
436 (defun nndoc-mbox-type-p ()
437 (when (looking-at message-unix-mail-delimiter)
440 (defun nndoc-mbox-article-begin ()
441 (when (re-search-forward (concat "^" message-unix-mail-delimiter) nil t)
442 (goto-char (match-beginning 0))))
444 (defun nndoc-mbox-body-end ()
449 (and (re-search-backward
450 (concat "^" message-unix-mail-delimiter) nil t)
452 (search-forward "\n\n" beg t)
454 "^Content-Length:[ \t]*\\([0-9]+\\) *$" end t)
455 (setq len (string-to-number (match-string 1)))
456 (search-forward "\n\n" beg t)
457 (unless (= (setq len (+ (point) len)) (point-max))
458 (and (< len (point-max))
460 (looking-at message-unix-mail-delimiter)))))
463 (defun nndoc-mmdf-type-p ()
464 (when (looking-at "\^A\^A\^A\^A$")
467 (defun nndoc-debbugs-db-type-p ()
468 (when (looking-at "\006$")
471 (defun nndoc-news-type-p ()
472 (when (looking-at "^Path:.*\n")
475 (defun nndoc-rnews-type-p ()
476 (when (looking-at "#! *rnews")
479 (defun nndoc-rnews-body-end ()
480 (and (re-search-backward nndoc-article-begin nil t)
482 (goto-char (+ (point) (string-to-number (match-string 1))))))
484 (defun nndoc-google-type-p ()
485 (when (re-search-forward "^=3D=3D 1 of [0-9]+ =3D=3D$" nil t)
488 (defun nndoc-decode-content-transfer-encoding ()
491 (message-narrow-to-head)
492 (message-fetch-field "content-transfer-encoding"))))
494 (search-forward "\n\n" nil t))
496 (narrow-to-region (point) (point-max))
497 (mm-decode-content-transfer-encoding
498 (intern (downcase (mail-header-strip encoding))))))))
500 (defun nndoc-babyl-type-p ()
501 (when (re-search-forward "\^_\^L *\n" nil t)
504 (defun nndoc-babyl-body-begin ()
505 (re-search-forward "^\n" nil t)
506 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
507 (let ((next (or (save-excursion
508 (re-search-forward nndoc-article-begin nil t))
510 (unless (re-search-forward "^\n" next t)
514 (forward-line -1)))))
516 (defun nndoc-babyl-head-begin ()
517 (when (re-search-forward "^[0-9].*\n" nil t)
518 (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
522 (defun nndoc-forward-type-p ()
523 (when (and (re-search-forward "^-+ \\(Start of \\)?forwarded message.*\n+"
525 (looking-at "[\r\n]*[a-zA-Z][a-zA-Z0-9-]*:\\|^>?From "))
528 (defun nndoc-rfc934-type-p ()
529 (when (and (re-search-forward "^-+ Start of forwarded.*\n+" nil t)
530 (not (re-search-forward "^Subject:.*digest" nil t))
531 (not (re-search-backward "^From:" nil t 2))
532 (not (re-search-forward "^From:" nil t 2)))
535 (defun nndoc-mailman-type-p ()
536 (when (re-search-forward "^--__--__--\n+" nil t)
539 (defun nndoc-rfc822-forward-type-p ()
541 (message-narrow-to-head)
542 (when (re-search-forward "^Content-Type: *message/rfc822" nil t)
545 (defun nndoc-rfc822-forward-body-end-function ()
546 (goto-char (point-max)))
548 (defun nndoc-rfc822-forward-generate-article (article &optional head)
549 (let ((entry (cdr (assq article nndoc-dissection-alist)))
552 (with-current-buffer nndoc-current-buffer
554 (message-narrow-to-head)
555 (setq encoding (message-fetch-field "content-transfer-encoding"))))
556 (insert-buffer-substring nndoc-current-buffer (car entry) (nth 3 entry))
559 (narrow-to-region begin (point-max))
560 (mm-decode-content-transfer-encoding
561 (intern (downcase (mail-header-strip encoding))))))
564 (when (search-forward "\n\n" nil t)
565 (delete-region (1- (point)) (point-max)))))
568 (defun nndoc-rfc822-forward-generate-head (article)
569 (nndoc-rfc822-forward-generate-article article 'head))
571 (defun nndoc-mime-parts-type-p ()
572 (let ((case-fold-search t)
573 (limit (search-forward "\n\n" nil t)))
574 (goto-char (point-min))
578 ^Content-Type:[ \t]*multipart/[a-z]+ *; *\\(\\(\n[ \t]\\)?.*;\\)*"
579 "\\(\n[ \t]\\)?[ \t]*boundary=\"?[^\"\n]*[^\" \t\n]")
583 (defun nndoc-transform-mime-parts (article)
584 (let* ((entry (cdr (assq article nndoc-dissection-alist)))
585 (headers (nth 5 entry)))
587 (goto-char (point-min))
590 (defun nndoc-generate-mime-parts-head (article)
591 (let* ((entry (cdr (assq article nndoc-dissection-alist)))
592 (headers (nth 6 entry)))
594 (narrow-to-region (point) (point))
595 (insert-buffer-substring
596 nndoc-current-buffer (car entry) (nth 1 entry))
597 (goto-char (point-max)))
601 (defun nndoc-clari-briefs-type-p ()
602 (when (let ((case-fold-search nil))
603 (re-search-forward "^\t[^a-z]+ ([^a-z]+) --" nil t))
606 (defun nndoc-transform-clari-briefs (article)
607 (goto-char (point-min))
608 (when (looking-at " *\\*\\(.*\\)\n")
609 (replace-match "" t t))
610 (nndoc-generate-clari-briefs-head article))
612 (defun nndoc-generate-clari-briefs-head (article)
613 (let ((entry (cdr (assq article nndoc-dissection-alist)))
615 (with-current-buffer nndoc-current-buffer
617 (narrow-to-region (car entry) (nth 3 entry))
618 (goto-char (point-min))
619 (when (looking-at " *\\*\\(.*\\)$")
620 (setq subject (match-string 1))
621 (when (string-match "[ \t]+$" subject)
622 (setq subject (substring subject 0 (match-beginning 0)))))
624 (let ((case-fold-search nil))
626 "^\t\\([^a-z]+\\(,[^(]+\\)? ([^a-z]+)\\) --" nil t))
627 (setq from (match-string 1)))))
628 (insert "From: " "clari@clari.net (" (or from "unknown") ")"
629 "\nSubject: " (or subject "(no subject)") "\n")))
631 (defun nndoc-exim-bounce-type-p ()
632 (and (re-search-forward "^------ This is a copy of the message, including all the headers. ------" nil t)
635 (defun nndoc-exim-bounce-body-end-function ()
636 (goto-char (point-max)))
639 (defun nndoc-mime-digest-type-p ()
640 (let ((case-fold-search t)
641 boundary-id b-delimiter entry)
644 (concat "^Content-Type: *multipart/digest;[ \t\n]*[ \t]"
645 "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)")
648 (setq boundary-id (match-string 1)
649 b-delimiter (concat "\n--" boundary-id "[ \t]*$"))
650 (setq entry (assq 'mime-digest nndoc-type-alist))
653 (cons 'head-begin "^ ?\n")
654 (cons 'head-end "^ ?$")
655 (cons 'body-begin "^ ?\n")
656 (cons 'article-begin b-delimiter)
657 (cons 'body-end-function 'nndoc-digest-body-end)
658 (cons 'file-end (concat "^--" boundary-id "--[ \t]*$"))))
661 (defun nndoc-standard-digest-type-p ()
662 (when (and (re-search-forward (concat "^" (make-string 70 ?-) "\n\n") nil t)
664 (concat "\n\n" (make-string 30 ?-) "\n\n") nil t))
667 (defun nndoc-digest-body-end ()
668 (and (re-search-forward nndoc-article-begin nil t)
669 (goto-char (match-beginning 0))))
671 (defun nndoc-slack-digest-type-p ()
674 (defun nndoc-git-type-p ()
675 (and (search-forward "\n- Log ---" nil t)
676 (search-forward "\ncommit " nil t)
677 (search-forward "\nAuthor: " nil t)))
679 (defun nndoc-transform-git-article (article)
680 (goto-char (point-min))
681 (when (re-search-forward "^Author: " nil t)
682 (replace-match "From: " t t)))
684 (defun nndoc-transform-git-headers (entry)
685 (goto-char (point-min))
686 (when (re-search-forward "^Author: " nil t)
687 (replace-match "From: " t t))
689 (with-current-buffer nndoc-current-buffer
690 (goto-char (car entry))
691 (when (search-forward "\n\n" nil t)
692 (setq subject (buffer-substring (point) (line-end-position)))))
694 (goto-char (point-min))
696 (insert (format "Subject: %s\n" subject)))))
698 (defun nndoc-lanl-gov-announce-type-p ()
699 (when (let ((case-fold-search nil))
700 (re-search-forward "^\\\\\\\\\n\\(Paper\\( (\\*cross-listing\\*)\\)?: [a-zA-Z-\\.]+/[0-9]+\\|arXiv:\\)" nil t))
703 (defun nndoc-transform-lanl-gov-announce (article)
704 (let ((case-fold-search nil))
705 (goto-char (point-max))
706 (when (re-search-backward "^\\\\\\\\ +( *\\([^ ]*\\) , *\\([^ ]*\\))" nil t)
707 (replace-match "\n\nGet it at \\1 (\\2)" t nil))
708 (goto-char (point-min))
709 (while (re-search-forward "^\\\\\\\\$" nil t)
710 (replace-match "" t nil))
711 (goto-char (point-min))
712 (when (re-search-forward "^replaced with revised version +\\(.*[^ ]\\) +" nil t)
713 (replace-match "Date: \\1 (revised) " t nil))
714 (goto-char (point-min))
715 (unless (re-search-forward "^From" nil t)
716 (goto-char (point-min))
717 (when (re-search-forward "^Authors?: \\(.*\\)" nil t)
718 (goto-char (point-min))
719 (insert "From: " (match-string 1) "\n")))
720 (when (re-search-forward "^arXiv:" nil t)
721 (replace-match "Paper: arXiv:" t nil))))
723 (defun nndoc-generate-lanl-gov-head (article)
724 (let ((entry (cdr (assq article nndoc-dissection-alist)))
725 (from "<no address given>")
727 (with-current-buffer nndoc-current-buffer
729 (narrow-to-region (car entry) (nth 1 entry))
730 (goto-char (point-min))
731 (when (looking-at "^\\(Paper.*: \\|arXiv:\\)\\([0-9a-zA-Z-\\./]+\\)")
732 (setq subject (concat " (" (match-string 2) ")"))
733 (when (re-search-forward "^From: \\(.*\\)" nil t)
734 (setq from (concat "<"
735 (cadr (funcall gnus-extract-address-components
736 (match-string 1))) ">")))
737 (if (re-search-forward "^Date: +\\([^(]*\\)" nil t)
738 (setq date (match-string 1))
739 (when (re-search-forward "^replaced with revised version +\\([^(]*\\)" nil t)
740 (setq date (match-string 1))))
741 (when (re-search-forward "^Title: \\([^\f]*\\)\nAuthors?: \\(.*\\)"
743 (setq subject (concat (match-string 1) subject))
744 (setq from (concat (match-string 2) " " from))))))
745 (while (and from (string-match "([^)]*)" from))
746 (setq from (replace-match "" t t from)))
747 (insert "From: " (or from "unknown")
748 "\nSubject: " (or subject "(no subject)") "\n")
749 (if date (insert "Date: " date))))
751 (defun nndoc-nsmail-type-p ()
752 (when (looking-at "From - ")
755 (defun nndoc-outlook-article-begin ()
756 (prog1 (re-search-forward "From:\\|Received:" nil t)
757 (goto-char (match-beginning 0))))
759 (defun nndoc-outlook-type-p ()
760 ;; FIXME: Is JMF the magic of outlook mailbox? -- ShengHuo.
763 (defun nndoc-oe-dbx-type-p ()
764 (looking-at (mm-string-to-multibyte "\317\255\022\376")))
766 (defun nndoc-read-little-endian ()
767 (+ (prog1 (char-after) (forward-char 1))
768 (lsh (prog1 (char-after) (forward-char 1)) 8)
769 (lsh (prog1 (char-after) (forward-char 1)) 16)
770 (lsh (prog1 (char-after) (forward-char 1)) 24)))
772 (defun nndoc-oe-dbx-decode-block ()
774 (nndoc-read-little-endian) ;; this address
775 (nndoc-read-little-endian) ;; next address offset
776 (nndoc-read-little-endian) ;; blocksize
777 (nndoc-read-little-endian))) ;; next address
779 (defun nndoc-oe-dbx-dissection ()
780 (let ((i 0) blk p tp)
781 (goto-char 60117) ;; 0x0000EAD4+1
784 (setq blk (nndoc-oe-dbx-decode-block)))
785 (while (and blk (> (car blk) 0) (or (zerop (nth 3 blk))
787 (push (list (incf i) p nil nil nil 0) nndoc-dissection-alist)
788 (while (and (> (car blk) 0) (> (nth 3 blk) p))
789 (goto-char (1+ (nth 3 blk)))
790 (setq blk (nndoc-oe-dbx-decode-block)))
791 (if (or (<= (car blk) p)
793 (not (zerop (nth 3 blk))))
795 (setq tp (+ (car blk) (nth 1 blk) 17))
796 (if (or (<= tp p) (>= tp (point-max)))
800 blk (nndoc-oe-dbx-decode-block)))))))
802 (defun nndoc-oe-dbx-generate-article (article &optional head)
803 (let ((entry (cdr (assq article nndoc-dissection-alist)))
804 (cur (current-buffer))
807 (with-current-buffer nndoc-current-buffer
809 (while (> p (point-min))
811 (setq blk (nndoc-oe-dbx-decode-block))
813 (with-current-buffer cur
814 (insert-buffer-substring nndoc-current-buffer p (+ p (nth 2 blk))))
815 (setq p (1+ (nth 3 blk)))))
817 (while (re-search-forward "\r$" nil t)
821 (when (search-forward "\n\n" nil t)
822 (setcar (cddddr entry) (count-lines (point) (point-max)))
823 (delete-region (1- (point)) (point-max))))
826 (defun nndoc-oe-dbx-generate-head (article)
827 (nndoc-oe-dbx-generate-article article 'head))
829 (defun nndoc-mail-in-mail-type-p ()
833 (while (re-search-forward "\n\n[-A-Za-z0-9]+:" nil t)
836 (while (looking-at "[ \t]\\|[-A-Za-z0-9]+:")
837 (if (looking-at "[-A-Za-z0-9]+:")
838 (setq found (1+ found)))
840 (if (and (> found 0) (looking-at "\n"))
844 (defun nndoc-mail-in-mail-article-begin ()
847 (while (re-search-forward "\n\n\\([-A-Za-z0-9]+:\\)" nil t)
849 (setq point (match-beginning 1))
851 (while (looking-at "[ \t]\\|[-A-Za-z0-9]+:")
852 (if (looking-at "[-A-Za-z0-9]+:")
853 (setq found (1+ found)))
855 (if (and (> found 0) (looking-at "\n"))
860 (deffoo nndoc-request-accept-article (group &optional server last)
864 ;;; Functions for dissecting the documents
867 (defun nndoc-search (regexp)
869 (re-search-forward regexp nil t)
870 (beginning-of-line)))
872 (defun nndoc-dissect-buffer ()
873 "Go through the document and partition it into heads/bodies/articles."
876 art-begin head-begin head-end body-begin body-end)
877 (setq nndoc-dissection-alist nil)
878 (with-current-buffer nndoc-current-buffer
879 (goto-char (point-min))
880 ;; Remove blank lines.
881 (while (eq (following-char) ?\n)
883 (when nndoc-pre-dissection-function
885 (funcall nndoc-pre-dissection-function)))
886 (if nndoc-dissection-function
887 (funcall nndoc-dissection-function)
888 ;; Find the beginning of the file.
889 (when nndoc-file-begin
890 (nndoc-search nndoc-file-begin))
891 ;; Go through the file.
892 (while (if (and first nndoc-first-article)
893 (nndoc-search nndoc-first-article)
895 (goto-char art-begin)
896 (nndoc-article-begin)))
899 (cond (nndoc-head-begin-function
900 (funcall nndoc-head-begin-function))
902 (nndoc-search nndoc-head-begin)))
905 (looking-at nndoc-file-end)))
906 (goto-char (point-max))
907 (setq head-begin (point))
908 (nndoc-search (or nndoc-head-end "^$"))
909 (setq head-end (point))
910 (if nndoc-body-begin-function
911 (funcall nndoc-body-begin-function)
912 (nndoc-search (or nndoc-body-begin "^\n")))
913 (setq body-begin (point))
914 (or (and nndoc-body-end-function
915 (funcall nndoc-body-end-function))
917 (nndoc-search nndoc-body-end))
918 (and (nndoc-article-begin)
919 (setq art-begin (point)))
921 (goto-char (point-max))
923 (and (re-search-backward nndoc-file-end nil t)
924 (beginning-of-line)))))
925 (setq body-end (point))
926 (push (list (incf i) head-begin head-end body-begin body-end
927 (count-lines body-begin body-end))
928 nndoc-dissection-alist)))))
929 (setq nndoc-dissection-alist (nreverse nndoc-dissection-alist))))
931 (defun nndoc-article-begin ()
932 (if nndoc-article-begin-function
933 (funcall nndoc-article-begin-function)
935 (nndoc-search nndoc-article-begin))))
937 (defun nndoc-unquote-dashes ()
938 "Unquote quoted non-separators in digests."
939 (while (re-search-forward "^- -"nil t)
940 (replace-match "-" t t)))
942 ;; Against compiler warnings.
943 (defvar nndoc-mime-split-ordinal)
945 (defun nndoc-dissect-mime-parts ()
946 "Go through a MIME composite article and partition it into sub-articles.
947 When a MIME entity contains sub-entities, dissection produces one article for
948 the header of this entity, and one article per sub-entity."
949 (setq nndoc-dissection-alist nil
950 nndoc-mime-split-ordinal 0)
951 (with-current-buffer nndoc-current-buffer
952 (nndoc-dissect-mime-parts-sub (point-min) (point-max) nil nil nil)))
954 (defun nndoc-dissect-mime-parts-sub (head-begin body-end article-insert
956 "Dissect an entity, within a composite MIME message.
957 The complete message or MIME entity extends from HEAD-BEGIN to BODY-END.
958 ARTICLE-INSERT should be added at beginning for generating a full article.
959 The string POSITION holds a dotted decimal representation of the article
960 position in the hierarchical structure, it is nil for the outer entity.
961 PARENT is the message-ID of the parent summary line, or nil for none."
962 (let ((case-fold-search t)
963 (message-id (nnmail-message-id))
964 head-end body-begin summary-insert message-rfc822 multipart-any
965 subject content-type type subtype boundary-regexp)
966 ;; Gracefully handle a missing body.
967 (goto-char head-begin)
968 (if (or (and (eq (char-after) ?\n) (or (forward-char 1) t))
969 (search-forward "\n\n" body-end t))
970 (setq head-end (1- (point))
972 (setq head-end body-end
973 body-begin body-end))
974 (narrow-to-region head-begin head-end)
975 ;; Save MIME attributes.
976 (goto-char head-begin)
977 (setq content-type (message-fetch-field "Content-Type"))
980 "^ *\\([^ \t\n/;]+\\)/\\([^ \t\n/;]+\\)" content-type)
981 (setq type (downcase (match-string 1 content-type))
982 subtype (downcase (match-string 2 content-type))
983 message-rfc822 (and (string= type "message")
984 (string= subtype "rfc822"))
985 multipart-any (string= type "multipart")))
986 (when (string-match ";[ \t\n]*name=\\([^ \t\n;]+\\)" content-type)
987 (setq subject (match-string 1 content-type)))
988 (when (string-match "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)" content-type)
989 (setq boundary-regexp (concat "^--"
991 (match-string 1 content-type))
992 "\\(--\\)?[ \t]*\n"))))
994 (when (or multipart-any (not article-insert))
995 (setq subject (message-fetch-field "Subject"))))
999 ;; Prepare the article and summary inserts.
1000 (unless article-insert
1001 (setq article-insert (buffer-string)
1002 head-end head-begin))
1004 (unless (string-match "MIME-Version:" article-insert)
1005 (setq article-insert
1006 (concat article-insert "MIME-Version: 1.0\n")))
1007 (setq summary-insert article-insert)
1008 ;; - summary Subject.
1009 (setq summary-insert
1010 (let ((line (concat "Subject: <" position
1011 (and position multipart-any ".")
1012 (and multipart-any "*")
1013 (and (or position multipart-any) " ")
1014 (cond ((string= subtype "plain") type)
1015 ((string= subtype "basic") type)
1021 (if (string-match "Subject:.*\n\\([ \t].*\n\\)*" summary-insert)
1022 (replace-match line t t summary-insert)
1023 (concat summary-insert line))))
1024 ;; - summary Message-ID.
1025 (setq summary-insert
1026 (let ((line (concat "Message-ID: " message-id "\n")))
1027 (if (string-match "Message-ID:.*\n\\([ \t].*\n\\)*" summary-insert)
1028 (replace-match line t t summary-insert)
1029 (concat summary-insert line))))
1030 ;; - summary References.
1032 (setq summary-insert
1033 (let ((line (concat "References: " parent "\n")))
1034 (if (string-match "References:.*\n\\([ \t].*\n\\)*"
1036 (replace-match line t t summary-insert)
1037 (concat summary-insert line)))))
1038 ;; Generate dissection information for this entity.
1039 (push (list (incf nndoc-mime-split-ordinal)
1040 head-begin head-end body-begin body-end
1041 (count-lines body-begin body-end)
1042 article-insert summary-insert)
1043 nndoc-dissection-alist)
1044 ;; Recurse for all sub-entities, if any.
1049 (nndoc-dissect-mime-parts-sub body-begin body-end nil
1050 position message-id)))
1051 ((and multipart-any boundary-regexp)
1052 (let ((part-counter 0)
1053 part-begin part-end eof-flag)
1054 (while (string-match "\
1055 ^\\(Lines\\|Content-\\(Type\\|Transfer-Encoding\\|Disposition\\)\\):.*\n\\([ \t].*\n\\)*"
1057 (setq article-insert (replace-match "" t t article-insert)))
1058 (let ((case-fold-search nil))
1059 (goto-char body-begin)
1060 (setq eof-flag (not (re-search-forward boundary-regexp body-end t)))
1061 (while (not eof-flag)
1062 (setq part-begin (point))
1063 (cond ((re-search-forward boundary-regexp body-end t)
1064 (or (not (match-string 1))
1065 (string= (match-string 1) "")
1068 (setq part-end (point))
1070 (t (setq part-end body-end
1073 (nndoc-dissect-mime-parts-sub
1074 part-begin part-end article-insert
1077 (format "%d" (incf part-counter)))
1081 (defun nndoc-add-type (definition &optional position)
1082 "Add document DEFINITION to the list of nndoc document definitions.
1083 If POSITION is nil or `last', the definition will be added
1084 as the last checked definition, if t or `first', add as the
1085 first definition, and if any other symbol, add after that
1086 symbol in the alist."
1087 ;; First remove any old instances.
1088 (gnus-alist-pull (car definition) nndoc-type-alist)
1089 ;; Then enter the new definition in the proper place.
1091 ((or (null position) (eq position 'last))
1092 (setq nndoc-type-alist (nconc nndoc-type-alist (list definition))))
1093 ((or (eq position t) (eq position 'first))
1094 (push definition nndoc-type-alist))
1096 (let ((list (memq (assq position nndoc-type-alist)
1099 (error "No such position: %s" position))
1100 (setcdr list (cons definition (cdr list)))))))
1104 ;;; nndoc.el ends here