;;; nndoc.el --- single file access for Gnus
-;; Copyright (C) 1995 Free Software Foundation, Inc.
+;; Copyright (C) 1995,96,97,98 Free Software Foundation, Inc.
-;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
+;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
;; Keywords: news
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
;;; Commentary:
;;; Code:
(require 'nnheader)
-(require 'rmail)
+(require 'message)
(require 'nnmail)
-
-(defvar nndoc-article-type 'mbox
- "*Type of the file - one of `mbox', `babyl', `digest', or `forward'.")
-
-(defvar nndoc-digest-type 'traditional
- "Type of the last digest. Auto-detected from the article header.
-Possible values:
- `traditional' -- the \"lots of dashes\" (30+) rules used;
- we currently also do unconditional RFC 934 unquoting.
- `rfc1341' -- RFC 1341 digest (MIME, unique boundary, no quoting).")
-
-(defconst nndoc-type-to-regexp
- `((mbox
- ,(concat "^" rmail-unix-mail-delimiter)
- ,(concat "^" rmail-unix-mail-delimiter)
- nil "^$" nil nil nil)
- (babyl "\^_\^L *\n" "\^_" "^[0-9].*\n" "^$" nil nil
- "^$")
- (digest
- "^------------------------------*[\n \t]+"
- "^------------------------------*[\n \t]+"
- nil "^ ?$"
- "^------------------------------*[\n \t]+"
- "^End of" nil)
+(require 'nnoo)
+(require 'gnus-util)
+(eval-when-compile (require 'cl))
+
+(nnoo-declare nndoc)
+
+(defvoo nndoc-article-type 'guess
+ "*Type of the file.
+One of `mbox', `babyl', `digest', `news', `rnews', `mmdf', `forward',
+`rfc934', `rfc822-forward', `mime-digest', `mime-parts', `standard-digest',
+`slack-digest', `clari-briefs' or `guess'.")
+
+(defvoo nndoc-post-type 'mail
+ "*Whether the nndoc group is `mail' or `post'.")
+
+(defvoo nndoc-open-document-hook 'nnheader-ms-strip-cr
+ "Hook run after opening a document.
+The default function removes all trailing carriage returns
+from the document.")
+
+(defvar nndoc-type-alist
+ `((mmdf
+ (article-begin . "^\^A\^A\^A\^A\n")
+ (body-end . "^\^A\^A\^A\^A\n"))
+ (news
+ (article-begin . "^Path:"))
+ (rnews
+ (article-begin . "^#! *rnews +\\([0-9]+\\) *\n")
+ (body-end-function . nndoc-rnews-body-end))
+ (mbox
+ (article-begin-function . nndoc-mbox-article-begin)
+ (body-end-function . nndoc-mbox-body-end))
+ (babyl
+ (article-begin . "\^_\^L *\n")
+ (body-end . "\^_")
+ (body-begin-function . nndoc-babyl-body-begin)
+ (head-begin-function . nndoc-babyl-head-begin))
(forward
- "^-+ Start of forwarded message -+\n+"
- "^-+ End of forwarded message -+\n"
- nil "^ ?$" nil nil nil)
- (mmfd
- "^\^A\^A\^A\^A\n" "^\^A\^A\^A\^A\n" nil "^$"
- nil nil nil))
- "Regular expressions for articles of the various types.
-article-begin, article-end, head-begin, head-end,
-first-article, end-of-file, body-begin.")
-
+ (article-begin . "^-+ Start of forwarded message -+\n+")
+ (body-end . "^-+ End of forwarded message -+$")
+ (prepare-body-function . nndoc-unquote-dashes))
+ (rfc934
+ (article-begin . "^--.*\n+")
+ (body-end . "^--.*$")
+ (prepare-body-function . nndoc-unquote-dashes))
+ (clari-briefs
+ (article-begin . "^ \\*")
+ (body-end . "^\t------*[ \t]^*\n^ \\*")
+ (body-begin . "^\t")
+ (head-end . "^\t")
+ (generate-head-function . nndoc-generate-clari-briefs-head)
+ (article-transform-function . nndoc-transform-clari-briefs))
+ (mime-digest
+ (article-begin . "")
+ (head-end . "^ ?$")
+ (body-end . "")
+ (file-end . "")
+ (subtype digest guess))
+ (mime-parts
+ (generate-head-function . nndoc-generate-mime-parts-head)
+ (article-transform-function . nndoc-transform-mime-parts))
+ (standard-digest
+ (first-article . ,(concat "^" (make-string 70 ?-) "\n *\n+"))
+ (article-begin . ,(concat "^\n" (make-string 30 ?-) "\n *\n+"))
+ (prepare-body-function . nndoc-unquote-dashes)
+ (body-end-function . nndoc-digest-body-end)
+ (head-end . "^ *$")
+ (body-begin . "^ *\n")
+ (file-end . "^End of .*digest.*[0-9].*\n\\*\\*\\|^End of.*Digest *$")
+ (subtype digest guess))
+ (slack-digest
+ (article-begin . "^------------------------------*[\n \t]+")
+ (head-end . "^ ?$")
+ (body-end-function . nndoc-digest-body-end)
+ (body-begin . "^ ?$")
+ (file-end . "^End of")
+ (prepare-body-function . nndoc-unquote-dashes)
+ (subtype digest guess))
+ (lanl-gov-announce
+ (article-begin . "^\\\\\\\\\n")
+ (head-begin . "^Paper.*:")
+ (head-end . "\\(^\\\\\\\\.*\n\\|-----------------\\)")
+ (body-begin . "")
+ (body-end . "-------------------------------------------------")
+ (file-end . "^Title: Recent Seminal")
+ (generate-head-function . nndoc-generate-lanl-gov-head)
+ (article-transform-function . nndoc-transform-lanl-gov-announce)
+ (subtype preprints guess))
+ (rfc822-forward
+ (article-begin . "^\n")
+ (body-end-function . nndoc-rfc822-forward-body-end-function))
+ (guess
+ (guess . t)
+ (subtype nil))
+ (digest
+ (guess . t)
+ (subtype nil))
+ (preprints
+ (guess . t)
+ (subtype nil))))
\f
-
-(defvar nndoc-article-begin nil)
-(defvar nndoc-article-end nil)
-(defvar nndoc-head-begin nil)
-(defvar nndoc-head-end nil)
-(defvar nndoc-first-article nil)
-(defvar nndoc-end-of-file nil)
-(defvar nndoc-body-begin nil)
-
-(defvar nndoc-current-server nil)
-(defvar nndoc-server-alist nil)
-(defvar nndoc-server-variables
- (list
- (list 'nndoc-article-type nndoc-article-type)
- '(nndoc-article-begin nil)
- '(nndoc-article-end nil)
- '(nndoc-head-begin nil)
- '(nndoc-head-end nil)
- '(nndoc-first-article nil)
- '(nndoc-current-buffer nil)
- '(nndoc-group-alist nil)
- '(nndoc-end-of-file nil)
- '(nndoc-body-begin nil)
- '(nndoc-address nil)))
+(defvoo nndoc-file-begin nil)
+(defvoo nndoc-first-article nil)
+(defvoo nndoc-article-begin nil)
+(defvoo nndoc-head-begin nil)
+(defvoo nndoc-head-end nil)
+(defvoo nndoc-file-end nil)
+(defvoo nndoc-body-begin nil)
+(defvoo nndoc-body-end-function nil)
+(defvoo nndoc-body-begin-function nil)
+(defvoo nndoc-head-begin-function nil)
+(defvoo nndoc-body-end nil)
+;; nndoc-dissection-alist is a list of sublists. Each sublist holds the
+;; following items. ARTICLE is an ordinal starting at 1. HEAD-BEGIN,
+;; HEAD-END, BODY-BEGIN and BODY-END are positions in the `nndoc' buffer.
+;; LINE-COUNT is a count of lines in the body. SUBJECT, MESSAGE-ID and
+;; REFERENCES, only present for MIME dissections, are field values.
+(defvoo nndoc-dissection-alist nil)
+(defvoo nndoc-prepare-body-function nil)
+(defvoo nndoc-generate-head-function nil)
+(defvoo nndoc-article-transform-function nil)
+(defvoo nndoc-article-begin-function nil)
+
+(defvoo nndoc-status-string "")
+(defvoo nndoc-group-alist nil)
+(defvoo nndoc-current-buffer nil
+ "Current nndoc news buffer.")
+(defvoo nndoc-address nil)
+(defvoo nndoc-mime-header nil)
+(defvoo nndoc-mime-subject nil)
(defconst nndoc-version "nndoc 1.0"
"nndoc version.")
-(defvar nndoc-current-buffer nil
- "Current nndoc news buffer.")
-
-(defvar nndoc-address nil)
-
\f
-(defvar nndoc-status-string "")
-
-(defvar nndoc-group-alist nil)
-
;;; Interface functions
-(defun nndoc-retrieve-headers (sequence &optional newsgroup server fetch-old)
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (let ((prev 2)
- article p beg lines)
- (nndoc-possibly-change-buffer newsgroup server)
- (if (stringp (car sequence))
- 'headers
- (set-buffer nndoc-current-buffer)
- (widen)
- (goto-char (point-min))
- (re-search-forward (or nndoc-first-article
- nndoc-article-begin) nil t)
- (or (not nndoc-head-begin)
- (re-search-forward nndoc-head-begin nil t))
- (re-search-forward nndoc-head-end nil t)
- (while sequence
- (setq article (car sequence))
- (set-buffer nndoc-current-buffer)
- (if (not (nndoc-forward-article (max 0 (- article prev))))
- ()
- (setq p (point))
- (setq beg (or (and
- (re-search-backward nndoc-article-begin nil t)
- (match-end 0))
- (point-min)))
- (goto-char p)
- (setq lines (count-lines
- (point)
- (or
- (and (re-search-forward nndoc-article-end nil t)
- (goto-char (match-beginning 0)))
- (goto-char (point-max)))))
-
- (set-buffer nntp-server-buffer)
- (insert (format "221 %d Article retrieved.\n" article))
- (insert-buffer-substring nndoc-current-buffer beg p)
- (goto-char (point-max))
- (or (= (char-after (1- (point))) ?\n) (insert "\n"))
- (insert (format "Lines: %d\n" lines))
- (insert ".\n"))
-
- (setq prev article
- sequence (cdr sequence)))
-
- ;; Fold continuation lines.
- (set-buffer nntp-server-buffer)
- (goto-char (point-min))
- (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
- (replace-match " " t t))
- 'headers))))
-
-(defun nndoc-open-server (server &optional defs)
- (nnheader-init-server-buffer)
- (if (equal server nndoc-current-server)
- t
- (if nndoc-current-server
- (setq nndoc-server-alist
- (cons (list nndoc-current-server
- (nnheader-save-variables nndoc-server-variables))
- nndoc-server-alist)))
- (let ((state (assoc server nndoc-server-alist)))
- (if state
- (progn
- (nnheader-restore-variables (nth 1 state))
- (setq nndoc-server-alist (delq state nndoc-server-alist)))
- (nnheader-set-init-variables nndoc-server-variables defs)))
- (setq nndoc-current-server server)
- (unless (eq nndoc-article-type 'guess)
- (nndoc-set-delims))
- t))
-
-(defun nndoc-close-server (&optional server)
- t)
-
-(defun nndoc-server-opened (&optional server)
- (and (equal server nndoc-current-server)
- nntp-server-buffer
- (buffer-name nntp-server-buffer)))
-
-(defun nndoc-status-message (&optional server)
- nndoc-status-string)
+(nnoo-define-basics nndoc)
-(defun nndoc-request-article (article &optional newsgroup server buffer)
+(deffoo nndoc-retrieve-headers (articles &optional newsgroup server fetch-old)
+ (when (nndoc-possibly-change-buffer newsgroup server)
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (erase-buffer)
+ (let (article entry)
+ (if (stringp (car articles))
+ 'headers
+ (while articles
+ (when (setq entry (cdr (assq (setq article (pop articles))
+ nndoc-dissection-alist)))
+ (insert (format "221 %d Article retrieved.\n" article))
+ (if nndoc-generate-head-function
+ (funcall nndoc-generate-head-function article)
+ (insert-buffer-substring
+ nndoc-current-buffer (car entry) (nth 1 entry)))
+ (goto-char (point-max))
+ (unless (= (char-after (1- (point))) ?\n)
+ (insert "\n"))
+ (insert (format "Lines: %d\n" (nth 4 entry)))
+ (insert ".\n")))
+
+ (nnheader-fold-continuation-lines)
+ 'headers)))))
+
+(deffoo nndoc-request-article (article &optional newsgroup server buffer)
(nndoc-possibly-change-buffer newsgroup server)
(save-excursion
- (let ((buffer (or buffer nntp-server-buffer)))
+ (let ((buffer (or buffer nntp-server-buffer))
+ (entry (cdr (assq article nndoc-dissection-alist)))
+ beg)
(set-buffer buffer)
(erase-buffer)
- (if (stringp article)
- nil
- (nndoc-insert-article article)
- ;; Unquote quoted non-separators in digests.
- (if (and (eq nndoc-article-type 'digest)
- (eq nndoc-digest-type 'traditional))
- (progn
- (goto-char (point-min))
- (while (re-search-forward "^- -"nil t)
- (replace-match "-" t t))))
- ;; Some assholish digests do not have a blank line after the
- ;; headers. Aargh!
- (goto-char (point-min))
- (if (search-forward "\n\n" nil t)
- () ; We let this one pass.
- (if (re-search-forward "^[ \t]+$" nil t)
- (replace-match "" t t) ; We nix out a line of blanks.
- (while (and (looking-at "[^ ]+:")
- (zerop (forward-line 1))))
- ;; We just insert a couple of lines. If you read digests
- ;; that are so badly formatted, you don't deserve any
- ;; better. Blphphpht!
- (insert "\n\n")))
- t))))
-
-(defun nndoc-request-group (group &optional server dont-check)
+ (when entry
+ (if (stringp article)
+ nil
+ (insert-buffer-substring
+ nndoc-current-buffer (car entry) (nth 1 entry))
+ (insert "\n")
+ (setq beg (point))
+ (insert-buffer-substring
+ nndoc-current-buffer (nth 2 entry) (nth 3 entry))
+ (goto-char beg)
+ (when nndoc-prepare-body-function
+ (funcall nndoc-prepare-body-function))
+ (when nndoc-article-transform-function
+ (funcall nndoc-article-transform-function article))
+ t)))))
+
+(deffoo nndoc-request-group (group &optional server dont-check)
"Select news GROUP."
- (save-excursion
- (if (not (nndoc-possibly-change-buffer group server))
- (progn
- (setq nndoc-status-string "No such file or buffer")
- nil)
- (nndoc-set-header-dependent-regexps) ; hack for MIME digests
- (if dont-check
- t
- (save-excursion
- (set-buffer nntp-server-buffer)
- (erase-buffer)
- (let ((number (nndoc-number-of-articles)))
- (if (zerop number)
- (progn
- (nndoc-close-group group)
- nil)
- (insert (format "211 %d %d %d %s\n" number 1 number group))
- t)))))))
-
-(defun nndoc-close-group (group &optional server)
+ (let (number)
+ (cond
+ ((not (nndoc-possibly-change-buffer group server))
+ (nnheader-report 'nndoc "No such file or buffer: %s"
+ nndoc-address))
+ (dont-check
+ (nnheader-report 'nndoc "Selected group %s" group)
+ t)
+ ((zerop (setq number (length nndoc-dissection-alist)))
+ (nndoc-close-group group)
+ (nnheader-report 'nndoc "No articles in group %s" group))
+ (t
+ (nnheader-insert "211 %d %d %d %s\n" number 1 number group)))))
+
+(deffoo nndoc-request-type (group &optional article)
+ (cond ((not article) 'unknown)
+ (nndoc-post-type nndoc-post-type)
+ (t 'unknown)))
+
+(deffoo nndoc-close-group (group &optional server)
(nndoc-possibly-change-buffer group server)
(and nndoc-current-buffer
(buffer-name nndoc-current-buffer)
(setq nndoc-group-alist (delq (assoc group nndoc-group-alist)
nndoc-group-alist))
(setq nndoc-current-buffer nil)
- (setq nndoc-current-server nil)
+ (nnoo-close-server 'nndoc server)
+ (setq nndoc-dissection-alist nil)
t)
-(defun nndoc-request-list (&optional server)
+(deffoo nndoc-request-list (&optional server)
nil)
-(defun nndoc-request-newgroups (date &optional server)
+(deffoo nndoc-request-newgroups (date &optional server)
nil)
-(defun nndoc-request-list-newsgroups (&optional server)
+(deffoo nndoc-request-list-newsgroups (&optional server)
nil)
-(defalias 'nndoc-request-post 'nnmail-request-post)
-
\f
;;; Internal functions.
(defun nndoc-possibly-change-buffer (group source)
(let (buf)
- (cond
+ (cond
;; The current buffer is this group's buffer.
((and nndoc-current-buffer
- (eq nndoc-current-buffer
+ (buffer-name nndoc-current-buffer)
+ (eq nndoc-current-buffer
(setq buf (cdr (assoc group nndoc-group-alist))))))
;; We change buffers by taking an old from the group alist.
- ;; `source' is either a string (a file name) or a buffer object.
+ ;; `source' is either a string (a file name) or a buffer object.
(buf
(setq nndoc-current-buffer buf))
- ;; It's a totally new group.
+ ;; It's a totally new group.
((or (and (bufferp nndoc-address)
(buffer-name nndoc-address))
(and (stringp nndoc-address)
(file-exists-p nndoc-address)
(not (file-directory-p nndoc-address))))
- (setq nndoc-group-alist
- (cons (cons group (setq nndoc-current-buffer
- (get-buffer-create
- (concat " *nndoc " group "*"))))
- nndoc-group-alist))
+ (push (cons group (setq nndoc-current-buffer
+ (get-buffer-create
+ (concat " *nndoc " group "*"))))
+ nndoc-group-alist)
+ (setq nndoc-dissection-alist nil)
(save-excursion
(set-buffer nndoc-current-buffer)
(buffer-disable-undo (current-buffer))
(erase-buffer)
(if (stringp nndoc-address)
- (insert-file-contents nndoc-address)
- (save-excursion
- (set-buffer nndoc-address)
- (widen))
- (insert-buffer-substring nndoc-address)))))
- (when (eq nndoc-article-type 'guess)
+ (nnheader-insert-file-contents nndoc-address)
+ (insert-buffer-substring nndoc-address))
+ (run-hooks 'nndoc-open-document-hook))))
+ ;; Initialize the nndoc structures according to this new document.
+ (when (and nndoc-current-buffer
+ (not nndoc-dissection-alist))
(save-excursion
(set-buffer nndoc-current-buffer)
- (setq nndoc-article-type (nndoc-guess-doc-type))
- (nndoc-set-delims)))
+ (nndoc-set-delims)
+ (if (eq nndoc-article-type 'mime-parts)
+ (nndoc-dissect-mime-parts)
+ (nndoc-dissect-buffer))))
+ (unless nndoc-current-buffer
+ (nndoc-close-server))
+ ;; Return whether we managed to select a file.
+ nndoc-current-buffer))
+
+;;;
+;;; Deciding what document type we have
+;;;
+
+(defun nndoc-set-delims ()
+ "Set the nndoc delimiter variables according to the type of the document."
+ (let ((vars '(nndoc-file-begin
+ nndoc-first-article
+ nndoc-article-begin-function
+ nndoc-head-begin nndoc-head-end
+ nndoc-file-end nndoc-article-begin
+ nndoc-body-begin nndoc-body-end-function nndoc-body-end
+ nndoc-prepare-body-function nndoc-article-transform-function
+ nndoc-generate-head-function nndoc-body-begin-function
+ nndoc-head-begin-function)))
+ (while vars
+ (set (pop vars) nil)))
+ (let (defs)
+ ;; Guess away until we find the real file type.
+ (while (assq 'guess (setq defs (cdr (assq nndoc-article-type
+ nndoc-type-alist))))
+ (setq nndoc-article-type (nndoc-guess-type nndoc-article-type)))
+ ;; Set the nndoc variables.
+ (while defs
+ (set (intern (format "nndoc-%s" (caar defs)))
+ (cdr (pop defs))))))
+
+(defun nndoc-guess-type (subtype)
+ (let ((alist nndoc-type-alist)
+ results result entry)
+ (while (and (not result)
+ (setq entry (pop alist)))
+ (when (memq subtype (or (cdr (assq 'subtype entry)) '(guess)))
+ (goto-char (point-min))
+ (when (numberp (setq result (funcall (intern
+ (format "nndoc-%s-type-p"
+ (car entry))))))
+ (push (cons result entry) results)
+ (setq result nil))))
+ (unless (or result results)
+ (error "Document is not of any recognized type"))
+ (if result
+ (car entry)
+ (cadar (sort results 'car-less-than-car)))))
+
+;;;
+;;; Built-in type predicates and functions
+;;;
+
+(defun nndoc-mbox-type-p ()
+ (when (looking-at message-unix-mail-delimiter)
t))
+(defun nndoc-mbox-article-begin ()
+ (when (re-search-forward (concat "^" message-unix-mail-delimiter) nil t)
+ (goto-char (match-beginning 0))))
-;; MIME (RFC 1341) digest hack by Ulrik Dickow <dickow@nbi.dk>.
-(defun nndoc-set-header-dependent-regexps ()
- (if (not (eq nndoc-article-type 'digest))
- ()
- (let ((case-fold-search t) ; We match a bit too much, keep it simple.
- boundary-id b-delimiter)
- (save-excursion
- (set-buffer nndoc-current-buffer)
- (goto-char (point-min))
- (if (and
- (re-search-forward
- (concat "\n\n\\|^Content-Type: *multipart/digest;[ \t\n]*[ \t]"
- "boundary=\"\\([^\"\n]*[^\" \t\n]\\)\"")
- nil t)
- (match-beginning 1))
- (setq nndoc-digest-type 'rfc1341
- boundary-id (format "%s"
- (buffer-substring
- (match-beginning 1) (match-end 1)))
- b-delimiter (concat "\n--" boundary-id "[\n \t]+")
- nndoc-article-begin b-delimiter ; Too strict: "[ \t]*$"
- nndoc-article-end (concat "\n--" boundary-id
- "\\(--\\)?[\n \t]+")
- nndoc-first-article b-delimiter ; ^eof ends article too.
- nndoc-end-of-file (concat "\n--" boundary-id "--[ \t]*$"))
- (setq nndoc-digest-type 'traditional))))))
-
-(defun nndoc-forward-article (n)
- (while (and (> n 0)
- (re-search-forward nndoc-article-begin nil t)
- (or (not nndoc-head-begin)
- (re-search-forward nndoc-head-begin nil t))
- (re-search-forward nndoc-head-end nil t))
- (setq n (1- n)))
- (zerop n))
-
-(defun nndoc-number-of-articles ()
- (save-excursion
- (set-buffer nndoc-current-buffer)
- (widen)
- (goto-char (point-min))
- (let ((num 0))
- (if (re-search-forward (or nndoc-first-article
- nndoc-article-begin) nil t)
- (progn
- (setq num 1)
- (while (and (re-search-forward nndoc-article-begin nil t)
- (or (not nndoc-end-of-file)
- (not (looking-at nndoc-end-of-file)))
- (or (not nndoc-head-begin)
- (re-search-forward nndoc-head-begin nil t))
- (re-search-forward nndoc-head-end nil t))
- (setq num (1+ num)))))
- num)))
-
-(defun nndoc-narrow-to-article (article)
- (save-excursion
- (set-buffer nndoc-current-buffer)
- (widen)
+(defun nndoc-mbox-body-end ()
+ (let ((beg (point))
+ len end)
+ (when
+ (save-excursion
+ (and (re-search-backward
+ (concat "^" message-unix-mail-delimiter) nil t)
+ (setq end (point))
+ (search-forward "\n\n" beg t)
+ (re-search-backward
+ "^Content-Length:[ \t]*\\([0-9]+\\) *$" end t)
+ (setq len (string-to-int (match-string 1)))
+ (search-forward "\n\n" beg t)
+ (unless (= (setq len (+ (point) len)) (point-max))
+ (and (< len (point-max))
+ (goto-char len)
+ (looking-at message-unix-mail-delimiter)))))
+ (goto-char len))))
+
+(defun nndoc-mmdf-type-p ()
+ (when (looking-at "\^A\^A\^A\^A$")
+ t))
+
+(defun nndoc-news-type-p ()
+ (when (looking-at "^Path:.*\n")
+ t))
+
+(defun nndoc-rnews-type-p ()
+ (when (looking-at "#! *rnews")
+ t))
+
+(defun nndoc-rnews-body-end ()
+ (and (re-search-backward nndoc-article-begin nil t)
+ (forward-line 1)
+ (goto-char (+ (point) (string-to-int (match-string 1))))))
+
+(defun nndoc-babyl-type-p ()
+ (when (re-search-forward "\^_\^L *\n" nil t)
+ t))
+
+(defun nndoc-babyl-body-begin ()
+ (re-search-forward "^\n" nil t)
+ (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
+ (let ((next (or (save-excursion
+ (re-search-forward nndoc-article-begin nil t))
+ (point-max))))
+ (unless (re-search-forward "^\n" next t)
+ (goto-char next)
+ (forward-line -1)
+ (insert "\n")
+ (forward-line -1)))))
+
+(defun nndoc-babyl-head-begin ()
+ (when (re-search-forward "^[0-9].*\n" nil t)
+ (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
+ (forward-line 1))
+ t))
+
+(defun nndoc-forward-type-p ()
+ (when (and (re-search-forward "^-+ Start of forwarded message -+\n+" nil t)
+ (not (re-search-forward "^Subject:.*digest" nil t))
+ (not (re-search-backward "^From:" nil t 2))
+ (not (re-search-forward "^From:" nil t 2)))
+ t))
+
+(defun nndoc-rfc934-type-p ()
+ (when (and (re-search-forward "^-+ Start of forwarded.*\n+" nil t)
+ (not (re-search-forward "^Subject:.*digest" nil t))
+ (not (re-search-backward "^From:" nil t 2))
+ (not (re-search-forward "^From:" nil t 2)))
+ t))
+
+(defun nndoc-rfc822-forward-type-p ()
+ (save-restriction
+ (message-narrow-to-head)
+ (when (re-search-forward "^Content-Type: *message/rfc822" nil t)
+ t)))
+
+(defun nndoc-rfc822-forward-body-end-function ()
+ (goto-char (point-max)))
+
+(defun nndoc-mime-parts-type-p ()
+ (let ((case-fold-search t)
+ (limit (search-forward "\n\n" nil t)))
(goto-char (point-min))
- (while (and (re-search-forward nndoc-article-begin nil t)
- (not (zerop (setq article (1- article))))))
- (if (not (zerop article))
- ()
- (narrow-to-region
- (match-end 0)
- (or (and (re-search-forward nndoc-article-end nil t)
- (match-beginning 0))
- (point-max)))
+ (when (and limit
+ (re-search-forward
+ (concat "\
+^Content-Type:[ \t]*multipart/[a-z]+;\\(.*;\\)*"
+ "[ \t\n]*[ \t]boundary=\"?[^\"\n]*[^\" \t\n]")
+ limit t))
t)))
-;; Insert article ARTICLE in the current buffer.
-(defun nndoc-insert-article (article)
- (let ((ibuf (current-buffer)))
+(defun nndoc-transform-mime-parts (article)
+ (unless (= article 1)
+ ;; Ensure some MIME-Version.
+ (goto-char (point-min))
+ (search-forward "\n\n")
+ (let ((case-fold-search nil)
+ (limit (point)))
+ (goto-char (point-min))
+ (or (save-excursion (re-search-forward "^MIME-Version:" limit t))
+ (insert "Mime-Version: 1.0\n")))
+ ;; Generate default header before entity fields.
+ (goto-char (point-min))
+ (nndoc-generate-mime-parts-head article t)))
+
+(defun nndoc-generate-mime-parts-head (article &optional body-present)
+ (let ((entry (cdr (assq (if body-present 1 article) nndoc-dissection-alist))))
+ (let ((subject (if body-present
+ nndoc-mime-subject
+ (concat "<" (nth 5 entry) ">")))
+ (message-id (nth 6 entry))
+ (references (nth 7 entry)))
+ (insert nndoc-mime-header)
+ (and subject (insert "Subject: " subject "\n"))
+ (and message-id (insert "Message-ID: " message-id "\n"))
+ (and references (insert "References: " references "\n")))))
+
+(defun nndoc-clari-briefs-type-p ()
+ (when (let ((case-fold-search nil))
+ (re-search-forward "^\t[^a-z]+ ([^a-z]+) --" nil t))
+ t))
+
+(defun nndoc-transform-clari-briefs (article)
+ (goto-char (point-min))
+ (when (looking-at " *\\*\\(.*\\)\n")
+ (replace-match "" t t))
+ (nndoc-generate-clari-briefs-head article))
+
+(defun nndoc-generate-clari-briefs-head (article)
+ (let ((entry (cdr (assq article nndoc-dissection-alist)))
+ subject from)
(save-excursion
(set-buffer nndoc-current-buffer)
- (widen)
- (goto-char (point-min))
- (while (and (re-search-forward nndoc-article-begin nil t)
- (not (zerop (setq article (1- article))))))
- (when (zerop article)
- (narrow-to-region
- (match-end 0)
- (or (and (re-search-forward nndoc-article-end nil t)
- (match-beginning 0))
- (point-max)))
+ (save-restriction
+ (narrow-to-region (car entry) (nth 3 entry))
(goto-char (point-min))
- (and nndoc-head-begin
- (re-search-forward nndoc-head-begin nil t)
- (narrow-to-region (point) (point-max)))
- (or (re-search-forward nndoc-head-end nil t)
- (goto-char (point-max)))
- (append-to-buffer ibuf (point-min) (point))
- (and nndoc-body-begin
- (re-search-forward nndoc-body-begin nil t))
- (append-to-buffer ibuf (point) (point-max))
- t))))
-
-(defun nndoc-guess-doc-type ()
- "Guess what document type is in the current buffer.
-Returns one of `babyl', `mbox', `digest', `forward', `mmfd' or nil."
- (goto-char (point-min))
- (cond
- ((looking-at rmail-unix-mail-delimiter)
- 'mbox)
- ((looking-at "\^A\^A\^A\^A$")
- 'mmfd)
- ((and (re-search-forward "^-+ Start of forwarded message -+\n+" nil t)
- (not (re-search-forward "^Subject:.*digest" nil t)))
- 'forward)
- ((re-search-forward "\^_\^L *\n" nil t)
- 'babyl)
- (t
- 'digest)))
+ (when (looking-at " *\\*\\(.*\\)$")
+ (setq subject (match-string 1))
+ (when (string-match "[ \t]+$" subject)
+ (setq subject (substring subject 0 (match-beginning 0)))))
+ (when
+ (let ((case-fold-search nil))
+ (re-search-forward
+ "^\t\\([^a-z]+\\(,[^(]+\\)? ([^a-z]+)\\) --" nil t))
+ (setq from (match-string 1)))))
+ (insert "From: " "clari@clari.net (" (or from "unknown") ")"
+ "\nSubject: " (or subject "(no subject)") "\n")))
+
+(defun nndoc-mime-digest-type-p ()
+ (let ((case-fold-search t)
+ boundary-id b-delimiter entry)
+ (when (and
+ (re-search-forward
+ (concat "^Content-Type: *multipart/digest;[ \t\n]*[ \t]"
+ "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)")
+ nil t)
+ (match-beginning 1))
+ (setq boundary-id (match-string 1)
+ b-delimiter (concat "\n--" boundary-id "[\n \t]+"))
+ (setq entry (assq 'mime-digest nndoc-type-alist))
+ (setcdr entry
+ (list
+ (cons 'head-end "^ ?$")
+ (cons 'body-begin "^ ?\n")
+ (cons 'article-begin b-delimiter)
+ (cons 'body-end-function 'nndoc-digest-body-end)
+ (cons 'file-end (concat "\n--" boundary-id "--[ \t]*$"))))
+ t)))
-(defun nndoc-set-delims ()
- (let ((defs (cdr (assq nndoc-article-type nndoc-type-to-regexp))))
- (setq nndoc-article-begin (nth 0 defs))
- (setq nndoc-article-end (nth 1 defs))
- (setq nndoc-head-begin (nth 2 defs))
- (setq nndoc-head-end (nth 3 defs))
- (setq nndoc-first-article (nth 4 defs))
- (setq nndoc-end-of-file (nth 5 defs))
- (setq nndoc-body-begin (nth 6 defs))))
+(defun nndoc-standard-digest-type-p ()
+ (when (and (re-search-forward (concat "^" (make-string 70 ?-) "\n\n") nil t)
+ (re-search-forward
+ (concat "\n\n" (make-string 30 ?-) "\n\n") nil t))
+ t))
+
+(defun nndoc-digest-body-end ()
+ (and (re-search-forward nndoc-article-begin nil t)
+ (goto-char (match-beginning 0))))
+
+(defun nndoc-slack-digest-type-p ()
+ 0)
+
+(defun nndoc-lanl-gov-announce-type-p ()
+ (when (let ((case-fold-search nil))
+ (re-search-forward "^\\\\\\\\\nPaper: [a-z-]+/[0-9]+" nil t))
+ t))
+
+(defun nndoc-transform-lanl-gov-announce (article)
+ (goto-char (point-max))
+ (when (re-search-backward "^\\\\\\\\ +(\\([^ ]*\\) , *\\([^ ]*\\))" nil t)
+ (replace-match "\n\nGet it at \\1 (\\2)" t nil))
+ ;; (when (re-search-backward "^\\\\\\\\$" nil t)
+ ;; (replace-match "" t t))
+ )
+
+(defun nndoc-generate-lanl-gov-head (article)
+ (let ((entry (cdr (assq article nndoc-dissection-alist)))
+ (e-mail "no address given")
+ subject from)
+ (save-excursion
+ (set-buffer nndoc-current-buffer)
+ (save-restriction
+ (narrow-to-region (car entry) (nth 1 entry))
+ (goto-char (point-min))
+ (when (looking-at "^Paper.*: \\([a-z-]+/[0-9]+\\)")
+ (setq subject (concat " (" (match-string 1) ")"))
+ (when (re-search-forward "^From: \\([^ ]+\\)" nil t)
+ (setq e-mail (match-string 1)))
+ (when (re-search-forward "^Title: \\([^\f]*\\)\nAuthors?: \\(.*\\)"
+ nil t)
+ (setq subject (concat (match-string 1) subject))
+ (setq from (concat (match-string 2) " <" e-mail ">"))))
+ ))
+ (while (and from (string-match "(\[^)\]*)" from))
+ (setq from (replace-match "" t t from)))
+ (insert "From: " (or from "unknown")
+ "\nSubject: " (or subject "(no subject)") "\n")))
+
+(deffoo nndoc-request-accept-article (group &optional server last)
+ nil)
+
+
+
+;;;
+;;; Functions for dissecting the documents
+;;;
+
+(defun nndoc-search (regexp)
+ (prog1
+ (re-search-forward regexp nil t)
+ (beginning-of-line)))
+
+(defun nndoc-dissect-buffer ()
+ "Go through the document and partition it into heads/bodies/articles."
+ (let ((i 0)
+ (first t)
+ head-begin head-end body-begin body-end)
+ (setq nndoc-dissection-alist nil)
+ (save-excursion
+ (set-buffer nndoc-current-buffer)
+ (goto-char (point-min))
+ ;; Find the beginning of the file.
+ (when nndoc-file-begin
+ (nndoc-search nndoc-file-begin))
+ ;; Go through the file.
+ (while (if (and first nndoc-first-article)
+ (nndoc-search nndoc-first-article)
+ (nndoc-article-begin))
+ (setq first nil)
+ (cond (nndoc-head-begin-function
+ (funcall nndoc-head-begin-function))
+ (nndoc-head-begin
+ (nndoc-search nndoc-head-begin)))
+ (if (or (eobp)
+ (and nndoc-file-end
+ (looking-at nndoc-file-end)))
+ (goto-char (point-max))
+ (setq head-begin (point))
+ (nndoc-search (or nndoc-head-end "^$"))
+ (setq head-end (point))
+ (if nndoc-body-begin-function
+ (funcall nndoc-body-begin-function)
+ (nndoc-search (or nndoc-body-begin "^\n")))
+ (setq body-begin (point))
+ (or (and nndoc-body-end-function
+ (funcall nndoc-body-end-function))
+ (and nndoc-body-end
+ (nndoc-search nndoc-body-end))
+ (nndoc-article-begin)
+ (progn
+ (goto-char (point-max))
+ (when nndoc-file-end
+ (and (re-search-backward nndoc-file-end nil t)
+ (beginning-of-line)))))
+ (setq body-end (point))
+ (push (list (incf i) head-begin head-end body-begin body-end
+ (count-lines body-begin body-end))
+ nndoc-dissection-alist))))))
+
+(defun nndoc-article-begin ()
+ (if nndoc-article-begin-function
+ (funcall nndoc-article-begin-function)
+ (ignore-errors
+ (nndoc-search nndoc-article-begin))))
+
+(defun nndoc-unquote-dashes ()
+ "Unquote quoted non-separators in digests."
+ (while (re-search-forward "^- -"nil t)
+ (replace-match "-" t t)))
+
+;; Against compiler warnings.
+(defvar nndoc-mime-split-ordinal)
+
+(defun nndoc-dissect-mime-parts ()
+ "Go through a MIME composite article and partition it into sub-articles.
+When a MIME entity contains sub-entities, dissection produces one article for
+the header of this entity, and one article per sub-entity."
+ (setq nndoc-dissection-alist nil
+ nndoc-mime-split-ordinal 0)
+ (save-excursion
+ (set-buffer nndoc-current-buffer)
+ (message-narrow-to-head)
+ (let ((case-fold-search t)
+ (message-id (message-fetch-field "Message-ID"))
+ (references (message-fetch-field "References")))
+ (setq nndoc-mime-header (buffer-substring (point-min) (point-max))
+ nndoc-mime-subject (message-fetch-field "Subject"))
+ (while (string-match "\
+^\\(Subject\\|Message-ID\\|References\\|Lines\\|\
+MIME-Version\\|Content-Type\\|Content-Transfer-Encoding\\|\
+\\):.*\n\\([ \t].*\n\\)*"
+ nndoc-mime-header)
+ (setq nndoc-mime-header (replace-match "" t t nndoc-mime-header)))
+ (widen)
+ (nndoc-dissect-mime-parts-sub (point-min) (point-max)
+ nil message-id references))))
+
+(defun nndoc-dissect-mime-parts-sub (begin end position message-id references)
+ "Dissect an entity within a composite MIME message.
+The article, which corresponds to a MIME entity, extends from BEGIN to END.
+The string POSITION holds a dotted decimal representation of the article
+position in the hierarchical structure, it is nil for the outer entity.
+The generated article should use MESSAGE-ID and REFERENCES field values."
+ ;; Note: `case-fold-search' is already `t' from the calling function.
+ (let ((head-begin begin)
+ (body-end end)
+ head-end body-begin type subtype composite comment)
+ (save-excursion
+ ;; Gracefully handle a missing body.
+ (goto-char head-begin)
+ (if (search-forward "\n\n" body-end t)
+ (setq head-end (1- (point))
+ body-begin (point))
+ (setq head-end end
+ body-begin end))
+ ;; Save MIME attributes.
+ (goto-char head-begin)
+ (if (re-search-forward "\
+^Content-Type: *\\([^ \t\n/;]+\\)/\\([^ \t\n/;]+\\)"
+ head-end t)
+ (setq type (downcase (match-string 1))
+ subtype (downcase (match-string 2)))
+ (setq type "text"
+ subtype "plain"))
+ (setq composite (string= type "multipart")
+ comment (concat position
+ (when (and position composite) ".")
+ (when composite "*")
+ (when (or position composite) " ")
+ (cond ((string= subtype "plain") type)
+ ((string= subtype "basic") type)
+ (t subtype))))
+ ;; Generate dissection information for this entity.
+ (push (list (incf nndoc-mime-split-ordinal)
+ head-begin head-end body-begin body-end
+ (count-lines body-begin body-end)
+ comment message-id references)
+ nndoc-dissection-alist)
+ ;; Recurse for all sub-entities, if any.
+ (goto-char head-begin)
+ (when (re-search-forward
+ (concat "\
+^Content-Type: *multipart/\\([a-z]+\\);\\(.*;\\)*"
+ "[ \t\n]*[ \t]boundary=\"?\\([^\"\n]*[^\" \t\n]\\)")
+ head-end t)
+ (let ((boundary (concat "\n--" (match-string 3) "\\(--\\)?[ \t]*\n"))
+ (part-counter 0)
+ begin end eof-flag)
+ (goto-char head-end)
+ (setq eof-flag (not (re-search-forward boundary body-end t)))
+ (while (not eof-flag)
+ (setq begin (point))
+ (cond ((re-search-forward boundary body-end t)
+ (or (not (match-string 1))
+ (string= (match-string 1) "")
+ (setq eof-flag t))
+ (forward-line -1)
+ (setq end (point))
+ (forward-line 1))
+ (t (setq end body-end
+ eof-flag t)))
+ (nndoc-dissect-mime-parts-sub begin end
+ (concat position (when position ".")
+ (format "%d"
+ (incf part-counter)))
+ (nnmail-message-id)
+ message-id)))))))
+
+;;;###autoload
+(defun nndoc-add-type (definition &optional position)
+ "Add document DEFINITION to the list of nndoc document definitions.
+If POSITION is nil or `last', the definition will be added
+as the last checked definition, if t or `first', add as the
+first definition, and if any other symbol, add after that
+symbol in the alist."
+ ;; First remove any old instances.
+ (gnus-pull (car definition) nndoc-type-alist)
+ ;; Then enter the new definition in the proper place.
+ (cond
+ ((or (null position) (eq position 'last))
+ (setq nndoc-type-alist (nconc nndoc-type-alist (list definition))))
+ ((or (eq position t) (eq position 'first))
+ (push definition nndoc-type-alist))
+ (t
+ (let ((list (memq (assq position nndoc-type-alist)
+ nndoc-type-alist)))
+ (unless list
+ (error "No such position: %s" position))
+ (setcdr list (cons definition (cdr list)))))))
(provide 'nndoc)
projects / gnus / blobdiff