X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=lisp%2Fnnmbox.el;h=4b453b8aba10505277ca58f52672ec0c1b2b615d;hb=e5bec5d05f433a43fa2d14cdb7bebeeefab8835f;hp=38f36c28b4ef1ad60821b84d884e8543d1d1dbdd;hpb=09868cf7efbfa51562d76580eafc9a7b6b0c8d72;p=elisp%2Fgnus.git- diff --git a/lisp/nnmbox.el b/lisp/nnmbox.el index 38f36c2..4b453b8 100644 --- a/lisp/nnmbox.el +++ b/lisp/nnmbox.el @@ -1,5 +1,7 @@ ;;; nnmbox.el --- mail mbox access for Gnus -;; Copyright (C) 1995,96,97,98,99 Free Software Foundation, Inc. + +;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000 +;; Free Software Foundation, Inc. ;; Author: Lars Magne Ingebrigtsen ;; Masanobu UMEDA @@ -24,11 +26,14 @@ ;;; Code: +(eval-when-compile (require 'cl)) +(eval-when-compile (require 'static)) + (require 'nnheader) (require 'message) (require 'nnmail) (require 'nnoo) -(eval-when-compile (require 'cl)) +(require 'gnus-range) (nnoo-declare nnmbox) @@ -59,11 +64,13 @@ (defvoo nnmbox-group-alist nil) (defvoo nnmbox-active-timestamp nil) -(defvoo nnmbox-file-coding-system mm-text-coding-system) +(defvoo nnmbox-file-coding-system 'binary) (defvoo nnmbox-file-coding-system-for-write nil) -(defvoo nnmbox-active-file-coding-system mm-text-coding-system) +(defvoo nnmbox-active-file-coding-system 'binary) (defvoo nnmbox-active-file-coding-system-for-write nil) +(defvar nnmbox-group-building-active-articles nil) +(defvar nnmbox-group-active-articles nil) ;;; Interface functions @@ -76,15 +83,12 @@ (erase-buffer) (let ((number (length sequence)) (count 0) - article art-string start stop) + article start stop) (nnmbox-possibly-change-newsgroup newsgroup server) (while sequence (setq article (car sequence)) - (setq art-string (nnmbox-article-string article)) (set-buffer nnmbox-mbox-buffer) - (when (or (search-forward art-string nil t) - (progn (goto-char (point-min)) - (search-forward art-string nil t))) + (when (nnmbox-find-article article) (setq start (save-excursion (re-search-backward @@ -146,8 +150,7 @@ (nnmbox-possibly-change-newsgroup newsgroup server) (save-excursion (set-buffer nnmbox-mbox-buffer) - (goto-char (point-min)) - (when (search-forward (nnmbox-article-string article) nil t) + (when (nnmbox-find-article article) (let (start stop) (re-search-backward (concat "^" message-unix-mail-delimiter) nil t) (setq start (point)) @@ -168,7 +171,7 @@ (forward-line 1)) (if (numberp article) (cons nnmbox-current-group article) - (nnmbox-article-group-number))))))) + (nnmbox-article-group-number nil))))))) (deffoo nnmbox-request-group (group &optional server dont-check) (nnmbox-possibly-change-newsgroup nil server) @@ -186,11 +189,18 @@ (1+ (- (cdr active) (car active))) (car active) (cdr active) group))))) -(defun nnmbox-save-buffer () - (let ((coding-system-for-write - (or nnmbox-file-coding-system-for-write - nnmbox-file-coding-system))) - (save-buffer))) +(static-if (boundp 'MULE) + (defun nnmbox-save-buffer () + (let ((output-coding-system + (or nnmbox-file-coding-system-for-write + nnmbox-file-coding-system))) + (save-buffer))) + (defun nnmbox-save-buffer () + (let ((coding-system-for-write + (or nnmbox-file-coding-system-for-write + nnmbox-file-coding-system))) + (save-buffer))) + ) (defun nnmbox-save-active (group-alist active-file) (let ((nnmail-active-file-coding-system @@ -243,7 +253,7 @@ (nnheader-report 'nnmbox "LIST NEWSGROUPS is not implemented.")) (deffoo nnmbox-request-expire-articles - (articles newsgroup &optional server force) + (articles newsgroup &optional server force) (nnmbox-possibly-change-newsgroup newsgroup server) (let* ((is-old t) rest) @@ -252,14 +262,21 @@ (save-excursion (set-buffer nnmbox-mbox-buffer) (while (and articles is-old) - (goto-char (point-min)) - (when (search-forward (nnmbox-article-string (car articles)) nil t) + (when (nnmbox-find-article (car articles)) (if (setq is-old (nnmail-expired-article-p newsgroup (buffer-substring (point) (progn (end-of-line) (point))) force)) (progn + (unless (eq nnmail-expiry-target 'delete) + (with-temp-buffer + (nnmbox-request-article (car articles) + newsgroup server + (current-buffer)) + (let ((nnml-current-directory nil)) + (nnmail-expiry-target-group + nnmail-expiry-target newsgroup)))) (nnheader-message 5 "Deleting article %d in %s..." (car articles) newsgroup) (nnmbox-delete-mail)) @@ -268,17 +285,14 @@ (nnmbox-save-buffer) ;; Find the lowest active article in this group. (let ((active (nth 1 (assoc newsgroup nnmbox-group-alist)))) - (goto-char (point-min)) - (while (and (not (search-forward - (nnmbox-article-string (car active)) nil t)) + (while (and (not (nnmbox-find-article (car active))) (<= (car active) (cdr active))) - (setcar active (1+ (car active))) - (goto-char (point-min)))) + (setcar active (1+ (car active))))) (nnmbox-save-active nnmbox-group-alist nnmbox-active-file) (nconc rest articles)))) (deffoo nnmbox-request-move-article - (article group server accept-form &optional last) + (article group server accept-form &optional last) (let ((buf (get-buffer-create " *nnmbox move*")) result) (and @@ -299,8 +313,7 @@ (save-excursion (nnmbox-possibly-change-newsgroup group server) (set-buffer nnmbox-mbox-buffer) - (goto-char (point-min)) - (when (search-forward (nnmbox-article-string article) nil t) + (when (nnmbox-find-article article) (nnmbox-delete-mail)) (and last (nnmbox-save-buffer)))) result)) @@ -350,8 +363,7 @@ (nnmbox-possibly-change-newsgroup group) (save-excursion (set-buffer nnmbox-mbox-buffer) - (goto-char (point-min)) - (if (not (search-forward (nnmbox-article-string article) nil t)) + (if (not (nnmbox-find-article article)) nil (nnmbox-delete-mail t t) (insert-buffer-substring buffer) @@ -395,6 +407,9 @@ (setq found t)) (when found (nnmbox-save-buffer)))) + (let ((entry (assoc group nnmbox-group-active-articles))) + (when entry + (setcar entry new-name))) (let ((entry (assoc group nnmbox-group-alist))) (when entry (setcar entry new-name)) @@ -411,6 +426,10 @@ ;; delimiter line. (defun nnmbox-delete-mail (&optional force leave-delim) ;; Delete the current X-Gnus-Newsgroup line. + ;; First delete record of active article, unless the article is being + ;; replaced, indicated by FORCE being non-nil. + (if (not force) + (nnmbox-record-deleted-article (nnmbox-article-group-number t))) (or force (delete-region (progn (beginning-of-line) (point)) @@ -432,7 +451,7 @@ (match-beginning 0))) (point-max)))) (goto-char (point-min)) - ;; Only delete the article if no other groups owns it as well. + ;; Only delete the article if no other group owns it as well. (when (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t))) (delete-region (point-min) (point-max)))))) @@ -442,14 +461,7 @@ (nnmbox-open-server server)) (when (or (not nnmbox-mbox-buffer) (not (buffer-name nnmbox-mbox-buffer))) - (save-excursion - (set-buffer (setq nnmbox-mbox-buffer - (let ((nnheader-file-coding-system - nnmbox-file-coding-system)) - (nnheader-find-file-noselect - nnmbox-mbox-file nil t)))) - (mm-enable-multibyte) - (buffer-disable-undo))) + (nnmbox-read-mbox)) (when (not nnmbox-group-alist) (nnmail-activate 'nnmbox)) (if newsgroup @@ -463,15 +475,86 @@ (int-to-string article) " ") (concat "\nMessage-ID: " article))) -(defun nnmbox-article-group-number () +(defun nnmbox-article-group-number (this-line) (save-excursion - (goto-char (point-min)) + (if this-line + (beginning-of-line) + (goto-char (point-min))) (when (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) " nil t) (cons (buffer-substring (match-beginning 1) (match-end 1)) (string-to-int (buffer-substring (match-beginning 2) (match-end 2))))))) +(defun nnmbox-in-header-p (pos) + "Return non-nil if POS is in the header of an article." + (save-excursion + (goto-char pos) + (re-search-backward (concat "^" message-unix-mail-delimiter) nil t) + (search-forward "\n\n" nil t) + (< pos (point)))) + +(defun nnmbox-find-article (article) + "Leaves point on the relevant X-Gnus-Newsgroup line if found." + ;; Check that article is in the active range first, to avoid an + ;; expensive exhaustive search if it isn't. + (if (and (numberp article) + (not (nnmbox-is-article-active-p article))) + nil + (let ((art-string (nnmbox-article-string article)) + (found nil)) + ;; There is the possibility that the X-Gnus-Newsgroup line appears + ;; in the body of an article (for instance, if an article has been + ;; forwarded from someone using Gnus as their mailer), so check + ;; that the line is actually part of the article header. + (or (and (search-forward art-string nil t) + (nnmbox-in-header-p (point))) + (progn + (goto-char (point-min)) + (while (not found) + (setq found (and (search-forward art-string nil t) + (nnmbox-in-header-p (point))))) + found))))) + +(defun nnmbox-record-active-article (group-art) + (let* ((group (car group-art)) + (article (cdr group-art)) + (entry + (or (assoc group nnmbox-group-active-articles) + (progn + (push (list group) + nnmbox-group-active-articles) + (car nnmbox-group-active-articles))))) + ;; add article to index, either by building complete list + ;; in reverse order, or as a list of ranges. + (if (not nnmbox-group-building-active-articles) + (setcdr entry (gnus-add-to-range (cdr entry) (list article))) + (when (memq article (cdr entry)) + (switch-to-buffer nnmbox-mbox-buffer) + (error "Article %s:%d already exists!" group article)) + (when (and (cadr entry) (< article (cadr entry))) + (switch-to-buffer nnmbox-mbox-buffer) + (error "Article %s:%d out of order" group article)) + (setcdr entry (cons article (cdr entry)))))) + +(defun nnmbox-record-deleted-article (group-art) + (let* ((group (car group-art)) + (article (cdr group-art)) + (entry + (or (assoc group nnmbox-group-active-articles) + (progn + (push (list group) + nnmbox-group-active-articles) + (car nnmbox-group-active-articles))))) + ;; remove article from index + (setcdr entry (gnus-remove-from-range (cdr entry) (list article))))) + +(defun nnmbox-is-article-active-p (article) + (gnus-member-of-range + article + (cdr (assoc nnmbox-current-group + nnmbox-group-active-articles)))) + (defun nnmbox-save-mail (group-art) "Called narrowed to an article." (let ((delim (concat "^" message-unix-mail-delimiter))) @@ -488,6 +571,10 @@ (nnmail-insert-lines) (nnmail-insert-xref group-art) (nnmbox-insert-newsgroup-line group-art) + (let ((alist group-art)) + (while alist + (nnmbox-record-active-article (car alist)) + (setq alist (cdr alist)))) (run-hooks 'nnmail-prepare-save-mail-hook) (run-hooks 'nnmbox-prepare-save-mail-hook) group-art)) @@ -519,7 +606,8 @@ (defun nnmbox-create-mbox () (when (not (file-exists-p nnmbox-mbox-file)) (let ((nnmail-file-coding-system - nnmbox-file-coding-system-for-write)) + (or nnmbox-file-coding-system-for-write + nnmbox-file-coding-system))) (nnmail-write-region 1 1 nnmbox-mbox-file t 'nomesg)))) (defun nnmbox-read-mbox () @@ -534,48 +622,80 @@ (save-excursion (let ((delim (concat "^" message-unix-mail-delimiter)) (alist nnmbox-group-alist) - start end number) + (nnmbox-group-building-active-articles t) + start end end-header number) (set-buffer (setq nnmbox-mbox-buffer (let ((nnheader-file-coding-system nnmbox-file-coding-system)) (nnheader-find-file-noselect nnmbox-mbox-file nil t)))) - (mm-enable-multibyte) - (buffer-disable-undo) + (buffer-disable-undo) - ;; Go through the group alist and compare against - ;; the mbox file. + ;; Go through the group alist and compare against the mbox file. (while alist (goto-char (point-max)) (when (and (re-search-backward (format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) " (caar alist)) nil t) - (>= (setq number - (string-to-number - (buffer-substring - (match-beginning 1) (match-end 1)))) - (cdadar alist))) - (setcdr (cadar alist) (1+ number))) + (> (setq number + (string-to-number + (buffer-substring + (match-beginning 1) (match-end 1)))) + (cdadar alist))) + (setcdr (cadar alist) number)) (setq alist (cdr alist))) + ;; Examine all articles for our private X-Gnus-Newsgroup + ;; headers. This is done primarily as a consistency check, but + ;; it is convenient for building an index of the articles + ;; present, to avoid costly searches for missing articles + ;; (eg. when expiring articles). (goto-char (point-min)) + (setq nnmbox-group-active-articles nil) (while (re-search-forward delim nil t) (setq start (match-beginning 0)) - (when (not (search-forward "\nX-Gnus-Newsgroup: " - (save-excursion - (setq end - (or - (and - (re-search-forward delim nil t) - (match-beginning 0)) - (point-max)))) - t)) + (save-excursion + (search-forward "\n\n" nil t) + (setq end-header (point)) + (setq end (or (and + (re-search-forward delim nil t) + (match-beginning 0)) + (point-max)))) + (if (search-forward "\nX-Gnus-Newsgroup: " end-header t) + ;; Build a list of articles in each group, remembering + ;; that each article may be in more than one group. + (progn + (nnmbox-record-active-article (nnmbox-article-group-number t)) + (while (search-forward "\nX-Gnus-Newsgroup: " end-header t) + (nnmbox-record-active-article (nnmbox-article-group-number t)))) + ;; The article is either new, or for some other reason + ;; hasn't got our private headers, so add them now. The + ;; only situation I've encountered when the X-Gnus-Newsgroup + ;; header is missing is if the article contains a forwarded + ;; message which does contain that header line (earlier + ;; versions of Gnus didn't restrict their search to the + ;; headers). In this case, there is an Xref line which + ;; provides the relevant information to construct the + ;; missing header(s). (save-excursion (save-restriction (narrow-to-region start end) - (nnmbox-save-mail - (nnmail-article-group 'nnmbox-active-number))))) - (goto-char end)))))) + (if (re-search-forward "\nXref: [^ ]+" end-header t) + ;; generate headers from Xref: + (let (alist) + (while (re-search-forward " \\([^:]+\\):\\([0-9]+\\)" end-header t) + (push (cons (match-string 1) + (string-to-int (match-string 2))) alist)) + (nnmbox-insert-newsgroup-line alist)) + ;; this is really a new article + (nnmbox-save-mail + (nnmail-article-group 'nnmbox-active-number)))))) + (goto-char end)) + ;; put article lists in order + (setq alist nnmbox-group-active-articles) + (while alist + (setcdr (car alist) (gnus-compress-sequence (nreverse (cdar alist)))) + (setq alist (cdr alist))))))) (provide 'nnmbox)