(require 'nnheader)
(require 'message)
(require 'nnmail)
(require 'nnoo)
(require 'gnus-util)
(require 'mm-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-parts', `standard-digest',
`slack-digest', `clari-briefs', `nsmail' 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"))
(nsmail
(article-begin . "^From - "))
(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
(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-begin . "^ ?\n")
(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))
(outlook
(article-begin-function . nndoc-outlook-article-begin)
(body-end . "\0"))
(guess
(guess . t)
(subtype nil))
(digest
(guess . t)
(subtype nil))
(preprints
(guess . t)
(subtype 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)
(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)
(defconst nndoc-version "nndoc 1.0"
"nndoc version.")
(nnoo-define-basics nndoc)
(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 (eq (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))
(entry (cdr (assq article nndoc-dissection-alist)))
beg)
(set-buffer buffer)
(erase-buffer)
(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."
(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)
(kill-buffer nndoc-current-buffer))
(setq nndoc-group-alist (delq (assoc group nndoc-group-alist)
nndoc-group-alist))
(setq nndoc-current-buffer nil)
(nnoo-close-server 'nndoc server)
(setq nndoc-dissection-alist nil)
t)
(deffoo nndoc-request-list (&optional server)
nil)
(deffoo nndoc-request-newgroups (date &optional server)
nil)
(deffoo nndoc-request-list-newsgroups (&optional server)
nil)
(defun nndoc-possibly-change-buffer (group source)
(let (buf)
(cond
((and nndoc-current-buffer
(buffer-name nndoc-current-buffer)
(eq nndoc-current-buffer
(setq buf (cdr (assoc group nndoc-group-alist))))))
(buf
(setq nndoc-current-buffer buf))
((or (and (bufferp nndoc-address)
(buffer-name nndoc-address))
(and (stringp nndoc-address)
(file-exists-p nndoc-address)
(not (file-directory-p nndoc-address))))
(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)
(erase-buffer)
(if (stringp nndoc-address)
(nnheader-insert-file-contents nndoc-address)
(insert-buffer-substring nndoc-address))
(run-hooks 'nndoc-open-document-hook))))
(when (and nndoc-current-buffer
(not nndoc-dissection-alist))
(save-excursion
(set-buffer nndoc-current-buffer)
(nndoc-set-delims)
(if (eq nndoc-article-type 'mime-parts)
(nndoc-dissect-mime-parts)
(nndoc-dissect-buffer))))
(unless nndoc-current-buffer
(nndoc-close-server))
nndoc-current-buffer))
(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)
(while (assq 'guess (setq defs (cdr (assq nndoc-article-type
nndoc-type-alist))))
(setq nndoc-article-type (nndoc-guess-type nndoc-article-type)))
(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))
(while (eq (following-char) ?\n)
(delete-char 1))
(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)))))
(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))))
(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))
(when (and limit
(re-search-forward
(concat "\
^Content-Type:[ \t]*multipart/[a-z]+ *; *\\(\\(\n[ \t]\\)?.*;\\)*"
"\\(\n[ \t]\\)?[ \t]*boundary=\"?[^\"\n]*[^\" \t\n]")
limit t))
t)))
(defun nndoc-transform-mime-parts (article)
(let* ((entry (cdr (assq article nndoc-dissection-alist)))
(headers (nth 5 entry)))
(when headers
(goto-char (point-min))
(insert headers))))
(defun nndoc-generate-mime-parts-head (article)
(let* ((entry (cdr (assq article nndoc-dissection-alist)))
(headers (nth 6 entry)))
(save-restriction
(narrow-to-region (point) (point))
(insert-buffer-substring
nndoc-current-buffer (car entry) (nth 1 entry))
(goto-char (point-max)))
(when headers
(insert headers))))
(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)
(save-restriction
(narrow-to-region (car entry) (nth 3 entry))
(goto-char (point-min))
(when (looking-at " *\\*\\(.*\\)$")
(setq subject (match-string 1))
(when (string-match "[ \t]+$" subject)
(setq subject (substring subject 0 (match-beginning 0)))))
(when
(let ((case-fold-search nil))
(re-search-forward
"^\t\\([^a-z]+\\(,[^(]+\\)? ([^a-z]+)\\) --" nil t))
(setq from (match-string 1)))))
(insert "From: " "clari@clari.net (" (or from "unknown") ")"
"\nSubject: " (or subject "(no subject)") "\n")))
(defun nndoc-mime-digest-type-p ()
(let ((case-fold-search t)
boundary-id b-delimiter entry)
(when (and
(re-search-forward
(concat "^Content-Type: *multipart/digest;[ \t\n]*[ \t]"
"boundary=\"?\\([^\"\n]*[^\" \t\n]\\)")
nil t)
(match-beginning 1))
(setq boundary-id (match-string 1)
b-delimiter (concat "\n--" boundary-id "[ \t]*$"))
(setq entry (assq 'mime-digest nndoc-type-alist))
(setcdr entry
(list
(cons 'head-begin "^ ?\n")
(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-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)))
(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")))
(defun nndoc-nsmail-type-p ()
(when (looking-at "From - ")
t))
(defun nndoc-outlook-article-begin ()
(prog1 (re-search-forward "From:\\|Received:" nil t)
(goto-char (match-beginning 0))))
(defun nndoc-outlook-type-p ()
(looking-at "JMF"))
(deffoo nndoc-request-accept-article (group &optional server last)
nil)
(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))
(while (eq (following-char) ?\n)
(delete-char 1))
(when nndoc-file-begin
(nndoc-search nndoc-file-begin))
(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)))
(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)
(nndoc-dissect-mime-parts-sub (point-min) (point-max) nil nil nil)))
(defun nndoc-dissect-mime-parts-sub (head-begin body-end article-insert
position parent)
"Dissect an entity, within a composite MIME message.
The complete message or MIME entity extends from HEAD-BEGIN to BODY-END.
ARTICLE-INSERT should be added at beginning for generating a full article.
The string POSITION holds a dotted decimal representation of the article
position in the hierarchical structure, it is nil for the outer entity.
PARENT is the message-ID of the parent summary line, or nil for none."
(let ((case-fold-search t)
(message-id (nnmail-message-id))
head-end body-begin summary-insert message-rfc822 multipart-any
subject content-type type subtype boundary-regexp)
(goto-char head-begin)
(if (or (and (eq (char-after) ?\n) (or (forward-char 1) t))
(search-forward "\n\n" body-end t))
(setq head-end (1- (point))
body-begin (point))
(setq head-end body-end
body-begin body-end))
(narrow-to-region head-begin head-end)
(goto-char head-begin)
(setq content-type (message-fetch-field "Content-Type"))
(when content-type
(when (string-match
"^ *\\([^ \t\n/;]+\\)/\\([^ \t\n/;]+\\)" content-type)
(setq type (downcase (match-string 1 content-type))
subtype (downcase (match-string 2 content-type))
message-rfc822 (and (string= type "message")
(string= subtype "rfc822"))
multipart-any (string= type "multipart")))
(when (string-match ";[ \t\n]*name=\\([^ \t\n;]+\\)" content-type)
(setq subject (match-string 1 content-type)))
(when (string-match "boundary=\"?\\([^\"\n]*[^\" \t\n]\\)" content-type)
(setq boundary-regexp (concat "^--"
(regexp-quote
(match-string 1 content-type))
"\\(--\\)?[ \t]*\n"))))
(unless subject
(when (or multipart-any (not article-insert))
(setq subject (message-fetch-field "Subject"))))
(unless type
(setq type "text"
subtype "plain"))
(unless article-insert
(setq article-insert (buffer-substring (point-min) (point-max))
head-end head-begin))
(setq summary-insert article-insert)
(setq summary-insert
(let ((line (concat "Subject: <" position
(and position multipart-any ".")
(and multipart-any "*")
(and (or position multipart-any) " ")
(cond ((string= subtype "plain") type)
((string= subtype "basic") type)
(t subtype))
">"
(and subject " ")
subject
"\n")))
(if (string-match "Subject:.*\n\\([ \t].*\n\\)*" summary-insert)
(replace-match line t t summary-insert)
(concat summary-insert line))))
(setq summary-insert
(let ((line (concat "Message-ID: " message-id "\n")))
(if (string-match "Message-ID:.*\n\\([ \t].*\n\\)*" summary-insert)
(replace-match line t t summary-insert)
(concat summary-insert line))))
(when parent
(setq summary-insert
(let ((line (concat "References: " parent "\n")))
(if (string-match "References:.*\n\\([ \t].*\n\\)*"
summary-insert)
(replace-match line t t summary-insert)
(concat summary-insert line)))))
(push (list (incf nndoc-mime-split-ordinal)
head-begin head-end body-begin body-end
(count-lines body-begin body-end)
article-insert summary-insert)
nndoc-dissection-alist)
(widen)
(cond
(message-rfc822
(save-excursion
(nndoc-dissect-mime-parts-sub body-begin body-end nil
position message-id)))
((and multipart-any boundary-regexp)
(let ((part-counter 0)
part-begin part-end eof-flag)
(while (string-match "\
^\\(Lines\\|Content-\\(Type\\|Transfer-Encoding\\|Disposition\\)\\):.*\n\\([ \t].*\n\\)*"
article-insert)
(setq article-insert (replace-match "" t t article-insert)))
(let ((case-fold-search nil))
(goto-char body-begin)
(setq eof-flag (not (re-search-forward boundary-regexp body-end t)))
(while (not eof-flag)
(setq part-begin (point))
(cond ((re-search-forward boundary-regexp body-end t)
(or (not (match-string 1))
(string= (match-string 1) "")
(setq eof-flag t))
(forward-line -1)
(setq part-end (point))
(forward-line 1))
(t (setq part-end body-end
eof-flag t)))
(save-excursion
(nndoc-dissect-mime-parts-sub
part-begin part-end article-insert
(concat position
(and position ".")
(format "%d" (incf part-counter)))
message-id)))))))))
(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."
(gnus-pull (car definition) nndoc-type-alist)
(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)