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Diffstat (limited to 'lisp/gnus/nnfolder.el')
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1 files changed, 768 insertions, 0 deletions
diff --git a/lisp/gnus/nnfolder.el b/lisp/gnus/nnfolder.el new file mode 100644 index 0000000000..7394994452 --- /dev/null +++ b/lisp/gnus/nnfolder.el @@ -0,0 +1,768 @@ +;;; nnfolder.el --- mail folder access for Gnus +;; Copyright (C) 1995,96,97 Free Software Foundation, Inc. + +;; Author: Scott Byer <[email protected]> +;; Lars Magne Ingebrigtsen <[email protected]> +;; Masanobu UMEDA <[email protected]> +;; Keywords: mail + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation; either version 2, or (at your option) +;; any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; 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, Inc., 59 Temple Place - Suite 330, +;; Boston, MA 02111-1307, USA. + +;;; Commentary: + +;;; Code: + +(require 'nnheader) +(require 'message) +(require 'nnmail) +(require 'nnoo) +(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.") + +;; I renamed this variable to something more in keeping with the general GNU +;; style. -SLB + +(defvoo nnfolder-ignore-active-file nil + "If non-nil, 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 it's values are not used. This costs some extra time when +scanning an mbox when opening it.") + +(defvoo nnfolder-distrust-mbox nil + "If non-nil, causes nnfolder to 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) + + + +;;; Interface functions + +(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 art-string 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 articles + (setq article (car articles)) + (setq art-string (nnfolder-article-string article)) + (set-buffer nnfolder-current-buffer) + (when (or (search-forward art-string nil t) + ;; Don't search the whole file twice! Also, articles + ;; probably have some locality by number, so searching + ;; backwards will be faster. Especially if we're at the + ;; beginning of the buffer :-). -SLB + (search-backward art-string nil t)) + (nnmail-search-unix-mail-delim-backward) + (setq start (point)) + (search-forward "\n\n" nil t) + (setq stop (1- (point))) + (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")) + (setq articles (cdr articles))) + + (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 (search-forward (nnfolder-article-string article) nil t) + (let (start stop) + (nnmail-search-unix-mail-delim-backward) + (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)) + (search-forward (concat "\n" nnfolder-article-marker)) + (cons nnfolder-current-group + (string-to-int + (buffer-substring + (point) (progn (end-of-line) (point))))))))))) + +(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))) + +;; Don't close the buffer if we're not shutting down the server. This way, +;; we can keep the buffer in the group buffer cache, and not have to grovel +;; over the buffer again unless we add new mail to it or modify it in some +;; way. + +(deffoo nnfolder-close-group (group &optional server force) + ;; Make sure we _had_ the group open. + (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) + ;; If the buffer was modified, write the file out now. + (nnfolder-save-buffer) + ;; If we're shutting the server down, we need to kill the + ;; buffer and remove it from the open buffer list. Or, of + ;; course, if we're trying to minimize our space impact. + (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) + (nnmail-save-active nnfolder-group-alist nnfolder-active-file))) + t) + +(deffoo nnfolder-request-list (&optional server) + (nnfolder-possibly-change-group nil server) + (save-excursion + (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 + (nnmail-find-file nnfolder-newsgroups-file))) + +(deffoo nnfolder-request-expire-articles + (articles newsgroup &optional server force) + (nnfolder-possibly-change-group newsgroup server) + (let* ((is-old t) + rest) + (nnmail-activate 'nnfolder) + + (save-excursion + (set-buffer nnfolder-current-buffer) + (while (and articles is-old) + (goto-char (point-min)) + (when (search-forward (nnfolder-article-string (car articles)) nil t) + (if (setq is-old + (nnmail-expired-article-p + newsgroup + (buffer-substring + (point) (progn (end-of-line) (point))) + force nnfolder-inhibit-expiry)) + (progn + (nnheader-message 5 "Deleting article %d..." + (car articles) newsgroup) + (nnfolder-delete-mail)) + (push (car articles) rest))) + (setq articles (cdr articles))) + (unless nnfolder-inhibit-expiry + (nnheader-message 5 "Deleting articles...done")) + (nnfolder-save-buffer) + (nnfolder-adjust-min-active newsgroup) + (nnmail-save-active nnfolder-group-alist nnfolder-active-file) + (nconc rest articles)))) + +(deffoo nnfolder-request-move-article + (article group server accept-form &optional last) + (let ((buf (get-buffer-create " *nnfolder move*")) + result) + (and + (nnfolder-request-article article group server) + (save-excursion + (set-buffer buf) + (buffer-disable-undo (current-buffer)) + (erase-buffer) + (insert-buffer-substring nntp-server-buffer) + (goto-char (point-min)) + (while (re-search-forward + (concat "^" nnfolder-article-marker) + (save-excursion (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 (search-forward (nnfolder-article-string article) nil t) + (nnfolder-delete-mail)) + (when last + (nnfolder-save-buffer) + (nnfolder-adjust-min-active group) + (nnmail-save-active nnfolder-group-alist nnfolder-active-file)))) + result)) + +(deffoo nnfolder-request-accept-article (group &optional server last) + (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)) + (search-forward "\n\n" nil t) + (forward-line -1) + (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))))) + (nnmail-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 nnfolder-current-buffer) + (goto-char (point-min)) + (if (not (search-forward (nnfolder-article-string article) nil t)) + nil + (nnfolder-delete-mail t t) + (insert-buffer-substring buffer) + (nnfolder-save-buffer) + t))) + +(deffoo nnfolder-request-delete-group (group &optional force server) + (nnfolder-close-group group server t) + ;; Delete all articles in GROUP. + (if (not force) + () ; Don't delete the articles. + ;; Delete the file that holds the group. + (ignore-errors + (delete-file (nnfolder-group-pathname group)))) + ;; Remove the group from all structures. + (setq nnfolder-group-alist + (delq (assoc group nnfolder-group-alist) nnfolder-group-alist) + nnfolder-current-group nil + nnfolder-current-buffer nil) + ;; Save the active file. + (nnmail-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 + (nnfolder-group-pathname new-name)) + t) + ;; That went ok, so we change the internal structures. + (let ((entry (assoc group nnfolder-group-alist))) + (and entry (setcar entry new-name)) + (setq nnfolder-current-buffer nil + nnfolder-current-group nil) + ;; Save the new group alist. + (nnmail-save-active nnfolder-group-alist nnfolder-active-file) + ;; We kill the buffer instead of renaming it and stuff. + (kill-buffer (current-buffer)) + t)))) + + +;;; Internal functions. + +(defun nnfolder-adjust-min-active (group) + ;; Find the lowest active article in this 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)) + (setq activemin (min activemin + (string-to-number (buffer-substring + (match-beginning 0) + (match-end 0)))))) + (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-delete-mail (&optional force leave-delim) + "Delete the message that point is in." + (save-excursion + (delete-region + (save-excursion + (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) + (if (and (not (bobp)) leave-delim) + (progn (forward-line -2) (point)) + (point)) + (point-max)))))) + +(defun nnfolder-possibly-change-group (group &optional server dont-check) + ;; Change servers. + (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)) + ;; Change group. + (when (and group + (not (equal group nnfolder-current-group))) + (nnmail-activate 'nnfolder) + (when (and (not (assoc group nnfolder-group-alist)) + (not (file-exists-p + (nnfolder-group-pathname group)))) + ;; The group doesn't exist, so we create a new entry for it. + (push (list group (cons 1 0)) nnfolder-group-alist) + (nnmail-save-active nnfolder-group-alist nnfolder-active-file)) + + (if dont-check + (setq nnfolder-current-group group) + (let (inf file) + ;; If we have to change groups, see if we don't already have the + ;; folder in memory. If we do, verify the modtime and destroy + ;; the folder if needed so we can rescan it. + (when (setq inf (assoc group nnfolder-buffer-alist)) + (setq nnfolder-current-buffer (nth 1 inf))) + + ;; If the buffer is not live, make sure it isn't in the alist. If it + ;; is live, verify that nobody else has touched the file since last + ;; time. + (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)) + ;; See whether we need to create the new file. + (unless (file-exists-p file) + (gnus-make-directory (file-name-directory file)) + (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)) + ;; The From line may have been quoted by movemail. + (when (looking-at (concat ">" message-unix-mail-delimiter)) + (delete-char 1)) + ;; This might come from somewhere else. + (unless (looking-at message-unix-mail-delimiter) + (insert "From nobody " (current-time-string) "\n") + (goto-char (point-min))) + ;; Quote all "From " lines in the article. + (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) + + ;; Insert the mail into each of the destination groups. + (while (setq group-art (pop group-art-list)) + ;; Kill any previous newsgroup markers. + (goto-char (point-min)) + (search-forward "\n\n" nil t) + (forward-line -1) + (while (search-backward (concat "\n" nnfolder-article-marker) nil t) + (delete-region (1+ (point)) (progn (forward-line 2) (point)))) + + ;; Insert the new newsgroup marker. + (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)) + (goto-char (point-max)) + (unless (eolp) + (insert "\n")) + (unless (bobp) + (insert "\n")) + (insert-buffer-substring obuf beg end))))) + + ;; Did we save it anywhere? + save-list)) + +(defun nnfolder-insert-newsgroup-line (group-art) + (save-excursion + (goto-char (point-min)) + (when (search-forward "\n\n" nil t) + (forward-char -1) + (insert (format (concat nnfolder-article-marker "%d %s\n") + (cdr group-art) (current-time-string)))))) + +(defun nnfolder-active-number (group) + ;; Find the next article number in GROUP. + (let ((active (cadr (assoc group nnfolder-group-alist)))) + (if active + (setcdr active (1+ (cdr active))) + ;; This group is new, so we create a new entry for it. + ;; This might be a bit naughty... creating groups on the drop of + ;; a hat, but I don't know... + (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 + (nnmail-save-active nnfolder-group-alist nnfolder-active-file)) + (push (list group (nnfolder-read-folder group)) + nnfolder-buffer-alist)))) + +;; This method has a problem if you've accidentally let the active list get +;; out of sync with the files. This could happen, say, if you've +;; accidentally gotten new mail with something other than Gnus (but why +;; would _that_ ever happen? :-). In that case, we will be in the middle of +;; processing the file, ready to add new X-Gnus article number markers, and +;; we'll run across a message with no ID yet - the active list _may_not_ be +;; ready for us yet. + +;; To handle this, I'm modifying this routine to maintain the maximum ID seen +;; so far, and when we hit a message with no ID, we will _manually_ scan the +;; rest of the message looking for any more, possibly higher IDs. We'll +;; assume the maximum that we find is the highest active. Note that this +;; shouldn't cost us much extra time at all, but will be a lot less +;; vulnerable to glitches between the mbox and the active file. + +(defun nnfolder-read-folder (group) + (let* ((file (nnfolder-group-pathname group)) + (buffer (set-buffer (nnheader-find-file-noselect file)))) + (if (equal (cadr (assoc group nnfolder-scantime-alist)) + (nth 5 (file-attributes file))) + ;; This looks up-to-date, so we don't do any scanning. + buffer + ;; Parse the damn thing. + (save-excursion + (nnmail-activate 'nnfolder) + ;; Read in the file. + (let ((delim (concat "^" message-unix-mail-delimiter)) + (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 (current-buffer)) + (setq maxid (cdr active)) + (goto-char (point-min)) + + ;; Anytime the active number is 1 or 0, it is suspect. In that + ;; case, search the file manually to find the active number. Or, + ;; of course, if we're being paranoid. (This would also be the + ;; place to build other lists from the header markers, such as + ;; expunge lists, etc., if we ever desired to abandon the active + ;; file entirely for mboxes.) + (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)))) + (setq maxid (max maxid newnum)) + (setq minid (min minid newnum)))) + (setcar active (max 1 (min minid maxid))) + (setcdr active (max maxid (cdr active))) + (goto-char (point-min))) + + ;; As long as we trust that the user will only insert unmarked mail + ;; at the end, go to the end and search backwards for the last + ;; marker. Find the start of that message, and begin to search for + ;; unmarked messages from there. + (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)))) + + ;; Keep track of the active number on our own, and insert it back + ;; into the active list when we're done. Also, prime the pump to + ;; cut down on the number of searches we do. + (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) + ;; There may be more than one "From " line, so we skip past + ;; them. + (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) + ;; Make absolutely sure that the active list reflects reality! + (nnmail-save-active nnfolder-group-alist nnfolder-active-file) + ;; Set the scantime for this group. + (setq newscantime (visited-file-modtime)) + (if scantime + (setcdr scantime (list newscantime)) + (push (list nnfolder-current-group newscantime) + nnfolder-scantime-alist)) + (current-buffer)))))) + +;;;###autoload +(defun nnfolder-generate-active-file () + "Look for mbox folders in the nnfolder directory and make them into groups." + (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)) + (setq nnfolder-group-alist (remove oldgroup 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)))) + (message ""))) + +(defun nnfolder-group-pathname (group) + "Make pathname for GROUP." + (let ((dir (file-name-as-directory (expand-file-name nnfolder-directory)))) + ;; If this file exists, we use it directly. + (if (or nnmail-use-long-file-names + (file-exists-p (concat dir group))) + (concat dir group) + ;; If not, we translate dots into slashes. + (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) + (save-buffer))) + +(provide 'nnfolder) + +;;; nnfolder.el ends here |