(require 'nnheader)
(require 'message)
(require 'nnmail)
(require 'nnoo)
(eval-when-compile (require 'cl))
(require 'gnus-util)
(nnoo-declare nnfolder)
(defvoo nnfolder-directory (expand-file-name message-directory)
"The name of the nnfolder directory.")
(defvoo nnfolder-active-file
(nnheader-concat nnfolder-directory "active")
"The name of the active file.")
(defvoo nnfolder-ignore-active-file nil
"If non-nil, the active file is ignored.
This causes nnfolder to do some extra work in order to determine the
true active ranges of an mbox file. Note that the active file is
still saved, but its values are not used. This costs some extra time
when scanning an mbox when opening it.")
(defvoo nnfolder-distrust-mbox nil
"If non-nil, the folder will be distrusted.
This means that nnfolder will not trust the user with respect to
inserting unaccounted for mail in the middle of an mbox file. This
can greatly slow down scans, which now must scan the entire file for
unmarked messages. When nil, scans occur forward from the last marked
message, a huge time saver for large mailboxes.")
(defvoo nnfolder-newsgroups-file
(concat (file-name-as-directory nnfolder-directory) "newsgroups")
"Mail newsgroups description file.")
(defvoo nnfolder-get-new-mail t
"If non-nil, nnfolder will check the incoming mail file and split the mail.")
(defvoo nnfolder-prepare-save-mail-hook nil
"Hook run narrowed to an article before saving.")
(defvoo nnfolder-save-buffer-hook nil
"Hook run before saving the nnfolder mbox buffer.")
(defvoo nnfolder-inhibit-expiry nil
"If non-nil, inhibit expiry.")
(defconst nnfolder-version "nnfolder 1.0"
"nnfolder version.")
(defconst nnfolder-article-marker "X-Gnus-Article-Number: "
"String used to demarcate what the article number for a message is.")
(defvoo nnfolder-current-group nil)
(defvoo nnfolder-current-buffer nil)
(defvoo nnfolder-status-string "")
(defvoo nnfolder-group-alist nil)
(defvoo nnfolder-buffer-alist nil)
(defvoo nnfolder-scantime-alist nil)
(defvoo nnfolder-active-timestamp nil)
(defvoo nnfolder-active-file-coding-system mm-text-coding-system)
(defvoo nnfolder-active-file-coding-system-for-write
nnmail-active-file-coding-system)
(defvoo nnfolder-file-coding-system mm-text-coding-system)
(defvoo nnfolder-file-coding-system-for-write nnheader-file-coding-system
"Coding system for save nnfolder file.
If nil, `nnfolder-file-coding-system' is used.")
(nnoo-define-basics nnfolder)
(deffoo nnfolder-retrieve-headers (articles &optional group server fetch-old)
(save-excursion
(set-buffer nntp-server-buffer)
(erase-buffer)
(let (article start stop)
(nnfolder-possibly-change-group group server)
(when nnfolder-current-buffer
(set-buffer nnfolder-current-buffer)
(goto-char (point-min))
(if (stringp (car articles))
'headers
(while (setq article (pop articles))
(set-buffer nnfolder-current-buffer)
(when (nnfolder-goto-article article)
(setq start (point))
(setq stop (if (search-forward "\n\n" nil t)
(1- (point))
(point-max)))
(set-buffer nntp-server-buffer)
(insert (format "221 %d Article retrieved.\n" article))
(insert-buffer-substring nnfolder-current-buffer start stop)
(goto-char (point-max))
(insert ".\n")))
(set-buffer nntp-server-buffer)
(nnheader-fold-continuation-lines)
'headers)))))
(deffoo nnfolder-open-server (server &optional defs)
(nnoo-change-server 'nnfolder server defs)
(nnmail-activate 'nnfolder t)
(gnus-make-directory nnfolder-directory)
(cond
((not (file-exists-p nnfolder-directory))
(nnfolder-close-server)
(nnheader-report 'nnfolder "Couldn't create directory: %s"
nnfolder-directory))
((not (file-directory-p (file-truename nnfolder-directory)))
(nnfolder-close-server)
(nnheader-report 'nnfolder "Not a directory: %s" nnfolder-directory))
(t
(nnmail-activate 'nnfolder)
(nnheader-report 'nnfolder "Opened server %s using directory %s"
server nnfolder-directory)
t)))
(deffoo nnfolder-request-close ()
(let ((alist nnfolder-buffer-alist))
(while alist
(nnfolder-close-group (caar alist) nil t)
(setq alist (cdr alist))))
(nnoo-close-server 'nnfolder)
(setq nnfolder-buffer-alist nil
nnfolder-group-alist nil))
(deffoo nnfolder-request-article (article &optional group server buffer)
(nnfolder-possibly-change-group group server)
(save-excursion
(set-buffer nnfolder-current-buffer)
(goto-char (point-min))
(when (nnfolder-goto-article article)
(let (start stop)
(setq start (point))
(forward-line 1)
(unless (and (nnmail-search-unix-mail-delim)
(forward-line -1))
(goto-char (point-max)))
(setq stop (point))
(let ((nntp-server-buffer (or buffer nntp-server-buffer)))
(set-buffer nntp-server-buffer)
(erase-buffer)
(insert-buffer-substring nnfolder-current-buffer start stop)
(goto-char (point-min))
(while (looking-at "From ")
(delete-char 5)
(insert "X-From-Line: ")
(forward-line 1))
(if (numberp article)
(cons nnfolder-current-group article)
(goto-char (point-min))
(cons nnfolder-current-group
(if (search-forward (concat "\n" nnfolder-article-marker)
nil t)
(string-to-int
(buffer-substring
(point) (progn (end-of-line) (point))))
-1))))))))
(deffoo nnfolder-request-group (group &optional server dont-check)
(nnfolder-possibly-change-group group server t)
(save-excursion
(if (not (assoc group nnfolder-group-alist))
(nnheader-report 'nnfolder "No such group: %s" group)
(if dont-check
(progn
(nnheader-report 'nnfolder "Selected group %s" group)
t)
(let* ((active (assoc group nnfolder-group-alist))
(group (car active))
(range (cadr active)))
(cond
((null active)
(nnheader-report 'nnfolder "No such group: %s" group))
((null nnfolder-current-group)
(nnheader-report 'nnfolder "Empty group: %s" group))
(t
(nnheader-report 'nnfolder "Selected group %s" group)
(nnheader-insert "211 %d %d %d %s\n"
(1+ (- (cdr range) (car range)))
(car range) (cdr range) group))))))))
(deffoo nnfolder-request-scan (&optional group server)
(nnfolder-possibly-change-group nil server)
(when nnfolder-get-new-mail
(nnfolder-possibly-change-group group server)
(nnmail-get-new-mail
'nnfolder
(lambda ()
(let ((bufs nnfolder-buffer-alist))
(save-excursion
(while bufs
(if (not (gnus-buffer-live-p (nth 1 (car bufs))))
(setq nnfolder-buffer-alist
(delq (car bufs) nnfolder-buffer-alist))
(set-buffer (nth 1 (car bufs)))
(nnfolder-save-buffer)
(kill-buffer (current-buffer)))
(setq bufs (cdr bufs))))))
nnfolder-directory
group)))
(deffoo nnfolder-close-group (group &optional server force)
(when (or (assoc group nnfolder-buffer-alist)
(equal group nnfolder-current-group))
(let ((inf (assoc group nnfolder-buffer-alist)))
(when inf
(when (and nnfolder-current-group
nnfolder-current-buffer)
(push (list nnfolder-current-group nnfolder-current-buffer)
nnfolder-buffer-alist))
(setq nnfolder-buffer-alist
(delq inf nnfolder-buffer-alist))
(setq nnfolder-current-buffer (cadr inf)
nnfolder-current-group (car inf))))
(when (and nnfolder-current-buffer
(buffer-name nnfolder-current-buffer))
(save-excursion
(set-buffer nnfolder-current-buffer)
(nnfolder-save-buffer)
(kill-buffer (current-buffer))
(setq nnfolder-buffer-alist (delq (assoc group nnfolder-buffer-alist)
nnfolder-buffer-alist)))))
(setq nnfolder-current-group nil
nnfolder-current-buffer nil)
t)
(deffoo nnfolder-request-create-group (group &optional server args)
(nnfolder-possibly-change-group nil server)
(nnmail-activate 'nnfolder)
(when group
(unless (assoc group nnfolder-group-alist)
(push (list group (cons 1 0)) nnfolder-group-alist)
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
(nnfolder-read-folder group)))
t)
(deffoo nnfolder-request-list (&optional server)
(nnfolder-possibly-change-group nil server)
(save-excursion
(let ((nnmail-file-coding-system nnfolder-active-file-coding-system))
(nnmail-find-file nnfolder-active-file)
(setq nnfolder-group-alist (nnmail-get-active)))
t))
(deffoo nnfolder-request-newgroups (date &optional server)
(nnfolder-possibly-change-group nil server)
(nnfolder-request-list server))
(deffoo nnfolder-request-list-newsgroups (&optional server)
(nnfolder-possibly-change-group nil server)
(save-excursion
(let ((nnmail-file-coding-system nnfolder-file-coding-system))
(nnmail-find-file nnfolder-newsgroups-file))))
(defun nnfolder-existing-articles ()
(save-excursion
(when nnfolder-current-buffer
(set-buffer nnfolder-current-buffer)
(goto-char (point-min))
(let ((marker (concat "\n" nnfolder-article-marker))
(number "[0-9]+")
numbers)
(while (and (search-forward marker nil t)
(re-search-forward number nil t))
(let ((newnum (string-to-number (match-string 0))))
(if (nnmail-within-headers-p)
(push newnum numbers))))
numbers))))
(deffoo nnfolder-request-expire-articles
(articles newsgroup &optional server force)
(nnfolder-possibly-change-group newsgroup server)
(let* ((is-old t)
(deleted-articles nil)
(maybe-expirable
(gnus-intersection articles (nnfolder-existing-articles))))
(nnmail-activate 'nnfolder)
(save-excursion
(set-buffer nnfolder-current-buffer)
(while (and maybe-expirable is-old)
(goto-char (point-min))
(when (and (nnfolder-goto-article (car maybe-expirable))
(search-forward (concat "\n" nnfolder-article-marker)
nil t))
(forward-sexp)
(when (setq is-old
(nnmail-expired-article-p
newsgroup
(buffer-substring
(point) (progn (end-of-line) (point)))
force nnfolder-inhibit-expiry))
(nnheader-message 5 "Deleting article %d..."
(car maybe-expirable) newsgroup)
(nnfolder-delete-mail)
(push (car maybe-expirable) deleted-articles)))
(setq maybe-expirable (cdr maybe-expirable)))
(unless nnfolder-inhibit-expiry
(nnheader-message 5 "Deleting articles...done"))
(nnfolder-save-buffer)
(nnfolder-adjust-min-active newsgroup)
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
(gnus-sorted-complement articles (nreverse deleted-articles)))))
(deffoo nnfolder-request-move-article (article group server
accept-form &optional last)
(save-excursion
(let ((buf (get-buffer-create " *nnfolder move*"))
result)
(and
(nnfolder-request-article article group server)
(save-excursion
(set-buffer buf)
(erase-buffer)
(insert-buffer-substring nntp-server-buffer)
(goto-char (point-min))
(while (re-search-forward
(concat "^" nnfolder-article-marker)
(save-excursion (and (search-forward "\n\n" nil t) (point)))
t)
(delete-region (progn (beginning-of-line) (point))
(progn (forward-line 1) (point))))
(setq result (eval accept-form))
(kill-buffer buf)
result)
(save-excursion
(nnfolder-possibly-change-group group server)
(set-buffer nnfolder-current-buffer)
(goto-char (point-min))
(when (nnfolder-goto-article article)
(nnfolder-delete-mail))
(when last
(nnfolder-save-buffer)
(nnfolder-adjust-min-active group)
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file))))
result)))
(deffoo nnfolder-request-accept-article (group &optional server last)
(save-excursion
(nnfolder-possibly-change-group group server)
(nnmail-check-syntax)
(let ((buf (current-buffer))
result art-group)
(goto-char (point-min))
(when (looking-at "X-From-Line: ")
(replace-match "From "))
(and
(nnfolder-request-list)
(save-excursion
(set-buffer buf)
(goto-char (point-min))
(if (search-forward "\n\n" nil t)
(forward-line -1)
(goto-char (point-max)))
(while (re-search-backward (concat "^" nnfolder-article-marker) nil t)
(delete-region (point) (progn (forward-line 1) (point))))
(when nnmail-cache-accepted-message-ids
(nnmail-cache-insert (nnmail-fetch-field "message-id")))
(setq result (if (stringp group)
(list (cons group (nnfolder-active-number group)))
(setq art-group
(nnmail-article-group 'nnfolder-active-number))))
(if (and (null result)
(yes-or-no-p "Moved to `junk' group; delete article? "))
(setq result 'junk)
(setq result
(car (nnfolder-save-mail result)))))
(when last
(save-excursion
(nnfolder-possibly-change-folder (or (caar art-group) group))
(nnfolder-save-buffer)
(when nnmail-cache-accepted-message-ids
(nnmail-cache-close)))))
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
(unless result
(nnheader-report 'nnfolder "Couldn't store article"))
result)))
(deffoo nnfolder-request-replace-article (article group buffer)
(nnfolder-possibly-change-group group)
(save-excursion
(set-buffer buffer)
(goto-char (point-min))
(let (xfrom)
(while (re-search-forward "^X-From-Line: \\(.*\\)$" nil t)
(setq xfrom (match-string 1))
(gnus-delete-line))
(goto-char (point-min))
(if xfrom
(insert "From " xfrom "\n")
(unless (looking-at "From ")
(insert "From nobody " (current-time-string) "\n"))))
(nnfolder-normalize-buffer)
(set-buffer nnfolder-current-buffer)
(goto-char (point-min))
(if (not (nnfolder-goto-article article))
nil
(nnfolder-delete-mail)
(insert-buffer-substring buffer)
(nnfolder-save-buffer)
t)))
(deffoo nnfolder-request-delete-group (group &optional force server)
(nnfolder-close-group group server t)
(if (not force)
() (ignore-errors
(delete-file (nnfolder-group-pathname group))))
(setq nnfolder-group-alist
(delq (assoc group nnfolder-group-alist) nnfolder-group-alist)
nnfolder-current-group nil
nnfolder-current-buffer nil)
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
t)
(deffoo nnfolder-request-rename-group (group new-name &optional server)
(nnfolder-possibly-change-group group server)
(save-excursion
(set-buffer nnfolder-current-buffer)
(and (file-writable-p buffer-file-name)
(ignore-errors
(rename-file
buffer-file-name
(let ((new-file (nnfolder-group-pathname new-name)))
(gnus-make-directory (file-name-directory new-file))
new-file))
t)
(let ((entry (assoc group nnfolder-group-alist)))
(and entry (setcar entry new-name))
(setq nnfolder-current-buffer nil
nnfolder-current-group nil)
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
(kill-buffer (current-buffer))
t))))
(defun nnfolder-request-regenerate (server)
(nnfolder-possibly-change-group nil server)
(nnfolder-generate-active-file)
t)
(defun nnfolder-adjust-min-active (group)
(let* ((active (cadr (assoc group nnfolder-group-alist)))
(marker (concat "\n" nnfolder-article-marker))
(number "[0-9]+")
(activemin (cdr active)))
(save-excursion
(set-buffer nnfolder-current-buffer)
(goto-char (point-min))
(while (and (search-forward marker nil t)
(re-search-forward number nil t))
(let ((newnum (string-to-number (match-string 0))))
(if (nnmail-within-headers-p)
(setq activemin (min activemin newnum)))))
(setcar active activemin))))
(defun nnfolder-article-string (article)
(if (numberp article)
(concat "\n" nnfolder-article-marker (int-to-string article) " ")
(concat "\nMessage-ID: " article)))
(defun nnfolder-goto-article (article)
"Place point at the start of the headers of ARTICLE.
ARTICLE can be an article number or a Message-ID.
Returns t if successful, nil otherwise."
(let ((art-string (nnfolder-article-string article))
start found)
(beginning-of-line)
(unless (bobp)
(forward-char -1))
(setq start (point))
(while (and (setq found (search-forward art-string nil t))
(not (nnmail-within-headers-p))))
(unless found
(goto-char start)
(while (and (setq found (search-backward art-string nil t))
(not (nnmail-within-headers-p)))))
(when found
(nnmail-search-unix-mail-delim-backward))))
(defun nnfolder-delete-mail (&optional leave-delim)
"Delete the message that point is in.
If optional argument LEAVE-DELIM is t, then mailbox delimiter is not
deleted. Point is left where the deleted region was."
(save-restriction
(narrow-to-region
(save-excursion
(forward-line 1)
(nnmail-search-unix-mail-delim-backward)
(if leave-delim (progn (forward-line 1) (point))
(point)))
(progn
(forward-line 1)
(if (nnmail-search-unix-mail-delim)
(point)
(point-max))))
(run-hooks 'nnfolder-delete-mail-hook)
(delete-region (point-min) (point-max))))
(defun nnfolder-possibly-change-group (group &optional server dont-check)
(when (and server
(not (nnfolder-server-opened server)))
(nnfolder-open-server server))
(unless (gnus-buffer-live-p nnfolder-current-buffer)
(setq nnfolder-current-buffer nil
nnfolder-current-group nil))
(when (and group
(not (equal group nnfolder-current-group)))
(let ((file-name-coding-system nnmail-pathname-coding-system))
(nnmail-activate 'nnfolder)
(when (and (not (assoc group nnfolder-group-alist))
(not (file-exists-p
(nnfolder-group-pathname group))))
(push (list group (cons 1 0)) nnfolder-group-alist)
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file))
(if dont-check
(setq nnfolder-current-group group
nnfolder-current-buffer nil)
(let (inf file)
(setq nnfolder-current-buffer
(nth 1 (assoc group nnfolder-buffer-alist)))
(when (and nnfolder-current-buffer
(not (gnus-buffer-live-p nnfolder-current-buffer)))
(setq nnfolder-buffer-alist (delq inf nnfolder-buffer-alist)
nnfolder-current-buffer nil))
(setq nnfolder-current-group group)
(when (or (not nnfolder-current-buffer)
(not (verify-visited-file-modtime
nnfolder-current-buffer)))
(save-excursion
(setq file (nnfolder-group-pathname group))
(unless (file-exists-p file)
(gnus-make-directory (file-name-directory file))
(let ((nnmail-file-coding-system
(or nnfolder-file-coding-system-for-write
nnfolder-file-coding-system-for-write)))
(nnmail-write-region 1 1 file t 'nomesg)))
(when (setq nnfolder-current-buffer (nnfolder-read-folder group))
(set-buffer nnfolder-current-buffer)
(push (list group nnfolder-current-buffer)
nnfolder-buffer-alist)))))))))
(defun nnfolder-save-mail (group-art-list)
"Called narrowed to an article."
(let* (save-list group-art)
(goto-char (point-min))
(when (looking-at ">From")
(delete-char 1))
(unless (looking-at "From ")
(insert "From nobody " (current-time-string) "\n")
(goto-char (point-min)))
(forward-line 1)
(let (case-fold-search)
(while (re-search-forward "^From " nil t)
(beginning-of-line)
(insert "> ")))
(setq save-list group-art-list)
(nnmail-insert-lines)
(nnmail-insert-xref group-art-list)
(run-hooks 'nnmail-prepare-save-mail-hook)
(run-hooks 'nnfolder-prepare-save-mail-hook)
(while (setq group-art (pop group-art-list))
(goto-char (point-min))
(if (search-forward "\n\n" nil t)
(forward-line -1)
(goto-char (point-max)))
(while (search-backward (concat "\n" nnfolder-article-marker) nil t)
(delete-region (1+ (point)) (progn (forward-line 2) (point))))
(nnfolder-insert-newsgroup-line group-art)
(save-excursion
(let ((beg (point-min))
(end (point-max))
(obuf (current-buffer)))
(nnfolder-possibly-change-folder (car group-art))
(let ((buffer-read-only nil))
(nnfolder-normalize-buffer)
(insert-buffer-substring obuf beg end)))))
save-list))
(defun nnfolder-normalize-buffer ()
"Make sure there are two newlines at the end of the buffer."
(goto-char (point-max))
(skip-chars-backward "\n")
(delete-region (point) (point-max))
(insert "\n\n"))
(defun nnfolder-insert-newsgroup-line (group-art)
(save-excursion
(goto-char (point-min))
(unless (search-forward "\n\n" nil t)
(goto-char (point-max))
(insert "\n"))
(forward-char -1)
(insert (format (concat nnfolder-article-marker "%d %s\n")
(cdr group-art) (current-time-string)))))
(defun nnfolder-active-number (group)
(let ((active (cadr (assoc group nnfolder-group-alist))))
(if active
(setcdr active (1+ (cdr active)))
(push (list group (setq active (cons 1 1)))
nnfolder-group-alist))
(cdr active)))
(defun nnfolder-possibly-change-folder (group)
(let ((inf (assoc group nnfolder-buffer-alist)))
(if (and inf
(gnus-buffer-live-p (cadr inf)))
(set-buffer (cadr inf))
(when inf
(setq nnfolder-buffer-alist (delq inf nnfolder-buffer-alist)))
(when nnfolder-group-alist
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file))
(push (list group (nnfolder-read-folder group))
nnfolder-buffer-alist))))
(defun nnfolder-read-folder (group)
(let* ((file (nnfolder-group-pathname group))
(buffer (set-buffer
(let ((nnheader-file-coding-system
nnfolder-file-coding-system))
(nnheader-find-file-noselect file)))))
(mm-enable-multibyte) (if (equal (cadr (assoc group nnfolder-scantime-alist))
(nth 5 (file-attributes file)))
(if (file-exists-p file)
buffer
(push (list group buffer) nnfolder-buffer-alist)
(set-buffer-modified-p t)
(nnfolder-save-buffer))
(save-excursion
(goto-char (point-min))
(while (eq (following-char) ?\n)
(delete-char 1))
(nnmail-activate 'nnfolder)
(let ((delim "^From ")
(marker (concat "\n" nnfolder-article-marker))
(number "[0-9]+")
(active (or (cadr (assoc group nnfolder-group-alist))
(cons 1 0)))
(scantime (assoc group nnfolder-scantime-alist))
(minid (lsh -1 -1))
maxid start end newscantime
buffer-read-only)
(buffer-disable-undo)
(setq maxid (cdr active))
(goto-char (point-min))
(when (or nnfolder-ignore-active-file
(< maxid 2))
(while (and (search-forward marker nil t)
(re-search-forward number nil t))
(let ((newnum (string-to-number (match-string 0))))
(if (nnmail-within-headers-p)
(setq maxid (max maxid newnum)
minid (min minid newnum)))))
(setcar active (max 1 (min minid maxid)))
(setcdr active (max maxid (cdr active)))
(goto-char (point-min)))
(when (not (or nnfolder-distrust-mbox
(< maxid 2)))
(goto-char (point-max))
(unless (re-search-backward marker nil t)
(goto-char (point-min)))
(when (nnmail-search-unix-mail-delim)
(goto-char (point-min))))
(unless (nnmail-search-unix-mail-delim)
(goto-char (point-max)))
(setq end (point-marker))
(while (not (= end (point-max)))
(setq start (marker-position end))
(goto-char end)
(while (looking-at delim)
(forward-line 1))
(set-marker end (if (nnmail-search-unix-mail-delim)
(point)
(point-max)))
(goto-char start)
(when (not (search-forward marker end t))
(narrow-to-region start end)
(nnmail-insert-lines)
(nnfolder-insert-newsgroup-line
(cons nil (nnfolder-active-number nnfolder-current-group)))
(widen)))
(set-marker end nil)
(nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
(setq newscantime (visited-file-modtime))
(if scantime
(setcdr scantime (list newscantime))
(push (list nnfolder-current-group newscantime)
nnfolder-scantime-alist))
(current-buffer))))))
(defun nnfolder-generate-active-file ()
"Look for mbox folders in the nnfolder directory and make them into groups.
This command does not work if you use short group names."
(interactive)
(nnmail-activate 'nnfolder)
(let ((files (directory-files nnfolder-directory))
file)
(while (setq file (pop files))
(when (and (not (backup-file-name-p file))
(message-mail-file-mbox-p
(nnheader-concat nnfolder-directory file)))
(let ((oldgroup (assoc file nnfolder-group-alist)))
(if oldgroup
(nnheader-message 5 "Refreshing group %s..." file)
(nnheader-message 5 "Adding group %s..." file))
(if oldgroup
(setq nnfolder-group-alist
(delq oldgroup (copy-sequence nnfolder-group-alist))))
(push (list file (cons 1 0)) nnfolder-group-alist)
(nnfolder-possibly-change-folder file)
(nnfolder-possibly-change-group file)
(nnfolder-close-group file))))
(nnheader-message 5 "")))
(defun nnfolder-group-pathname (group)
"Make pathname for GROUP."
(setq group
(mm-encode-coding-string group nnmail-pathname-coding-system))
(let ((dir (file-name-as-directory (expand-file-name nnfolder-directory))))
(if (or nnmail-use-long-file-names
(file-exists-p (concat dir group)))
(concat dir group)
(concat dir (nnheader-replace-chars-in-string group ?. ?/)))))
(defun nnfolder-save-buffer ()
"Save the buffer."
(when (buffer-modified-p)
(run-hooks 'nnfolder-save-buffer-hook)
(gnus-make-directory (file-name-directory (buffer-file-name)))
(let ((coding-system-for-write
(or nnfolder-file-coding-system-for-write
nnfolder-file-coding-system)))
(save-buffer))))
(defun nnfolder-save-active (group-alist active-file)
(let ((nnmail-active-file-coding-system
(or nnfolder-active-file-coding-system-for-write
nnfolder-active-file-coding-system)))
(nnmail-save-active group-alist active-file)))
(provide 'nnfolder)